Comsol Interior Boundary, 14 | FLUID–STRUCTURE INTERACTION IN ALUMI

Comsol Interior Boundary, 14 | FLUID–STRUCTURE INTERACTION IN ALUMINUM EXTRUSION fNow, define the volume … Fiverr freelancer will provide Architecture & Interior Design services and run comsol multiphysics thermal simulation ,heat transfer analysis including Rendering within 3 days Search for jobs related to Simulink comsol example or hire on the world's largest freelancing marketplace with 25m+ jobs. Read the help section on 'Interior Wall' for more information. This video explains each method and its advantages in different scenarios, including using: In the Interior Contact node, you define contact conditions for a set of internal boundaries in a solid model. It is similar to the Rigid Wall boundary condition available on exterior boundaries except that it applies on … The Continuity on Interior Boundary node ensures continuity of the molecular flux across boundaries within the geometry. It is similar to the boundary condition available on exterior boundaries except that it applies on both sides of an interior … The Interior Wall node adds a wall boundary condition on interior boundaries. It is similar to the Wall boundary condition available on exterior boundaries except that it applies on both sides of an interior … The General Interior Flux node, found under the More submenu, adds the most general interior boundary condition for the Elastic Waves, Time Explicit model, as it is formulated (in the conservative … The Interior Sound Hard Boundary (Wall) node, found under the Interior Conditions submenu, adds the boundary condition for a sound hard boundary or wall on interior boundaries. The Interior Wall boundary condition can only be applied on interior boundaries. The Interior Lumped Speaker Boundary is used to model a microtransducer (dust cap, cone, surround assembly, and motor) or another transducer using a lumped representation with a coupling to an … More Interior Boundary Options in the Time Explicit Physics Interface Perfect electric conductor (PEC), perfect magnetic conductor (PMC), and surface current density can now be applied to interior boundaries as well, when using the … In this blog post, we explore how to compute the electrical contact at a bolted connection between AC busbars using a boundary condition. Learn how to find the optimal locations for the inlet and outlet boundary conditions in a CFD simulation by reading this comprehensive blog post. Compared to the Interior Flux node, the Interior Flux Split node makes it possible to specify the numerical flux … In this 9-minute video, learn how to separate a geometry using partition operations in COMSOL Multiphysics®. The impedance can be any expression and can, for example, be a function of the frequency (freq). Engineering examples of applications of this equation are pipe water leak detection [15], water hammer in fluid … In this optimization process, ellipses represented RCA and concentration boundary, and the right boundary initial concentration is polygons represented natural aggregates. This contact formulation provides a simplified setup that does not require the addition of … For certain problems you can define interior boundary conditions, but in your case it sounds like you should modify your model so that input and output are actual boundary conditions on external Interior Wall boundary condition can only be applied on interior boundaries. If you click the View button, the selection list will show the … In my project, I have to simulate a heat transfer inside a box. If anyone know about this one, please … Learn how to select geometry in your COMSOL Multiphysics® models. The Activate Selection button is toggled off, hence the boundaries included in the selection are highlighted in … The other tutorial in the series, Boundary Layer Meshing — Adding Boundary Layers to an Imported Mesh, focuses on boundary-layer mesh generation for an imported mesh, including methods for … Interior and Exterior Boundaries When specifying boundary and interface conditions, COMSOL Multiphysics differentiates between exterior and interior boundaries: • The exterior and interior boundary conditions listed in Table 10-2 are available. … The Interior Wall boundary condition can only be applied on interior boundaries. My question is how to set one of the boundaries of interior domain to have heat inflow and outflow? Comsol only … The COMSOL discussion forum covers a wide variety of simulation topics. 0. Summary In conclusion, we have seen that the … Several interior boundaries are selected for the boundary condition in the Settings window. PK ú ;[ fileversion êÿ2091:COMSOL 6. The Number of rays per release controls the number of points created to discretize the radiating surface. In the interior of the selection where a physics feature is active, its behavior is governed by its model equations and material properties. Learn step by step how to set up the geometry and mesh for 2D, 2D axisymmetric, and 3D models with infinite domains in COMSOL Multiphysics®. The case of zero boundary stiffness used in this model corresponds to an interior free surface. The Thin Elastic Layer boundary condition or the Shell … Hello fellow Fluid Dynamicists I'm using COMSOL 5. The resulting wall distance, , and the direction to the nearest wall are available in COMSOL Multiphysics as predefined variables. The Interior Wall node adds a wall boundary condition on interior boundaries. I'm using COMSOL 5. The boom of 2D materials such as graphene . For assembly geometries with identity pairs, select a Continuity node in the Pairs menu in … Unless a boundary condition is specified on interior boundaries (such as a contact resistance condition), the COMSOL Multiphysics software ensures continuity in the field variables across interior boundaries. " When looking at the model through the inlet or outlet at the The Release from Boundary feature requires two numbers to determine the emission of rays. The condition relates the normal stress at the two sides of the boundary (up and down) to the normal … The Interior Dirichlet Boundary Condition, which is only available for interior boundaries in the Stabilized Convection-Diffusion Equation interface, specifies values of u on the upside and downside of interior … The Interior Wall feature is similar to the Wall feature but it applies to both sides of an interior boundary. , r=r0 at z=0, and discard the two boundaries z=z0/2* (1+cos (pi*rho/r0)) at theta = 0 and 2pi since theta covers the … The Interior Wall boundary condition is used to model a wall condition on an interior boundary. All variables and equations are defined for the … The Interior Wall boundary condition can only be applied on interior boundaries. In the unit cell, the top … 4Select all the exterior boundaries located in the ground. This will generate a whole … The boundary element method (BEM) is ideal for modeling large and infinite domains in acoustics analyses, such as acoustic-structure interaction, because you do not need to create large volumetric meshes. Includes MPH-file. Figure 3-3: A device … The COMSOL discussion forum covers a wide variety of simulation topics. The other tutorial in the series demonstrates how to add a boundary layer mesh to an imported mesh, how to refine an imported mesh, how to insert the boundary layer mesh, how to control the element growth rate from the boundary to the … For any structural contact simulation in COMSOL Multiphysics simulation software, you can use Form Assembly to finalize the geometry and automatically or man The slit condition should be applied only on an interior boundary or the port should be placed on an exterior boundary. In these tutorials you will learn how to set up a boundary layer mesh and modify the settings for an automatically created boundary layer mesh. Boundary conditions apply to the geometric entities separating … The Interior Fan condition represents interior boundaries where a fan condition is set using a fan pressure curve to avoid an explicit representation of the fan. 4. You can look into the 'Interior Wall' boundary condition. 1 and I'm trying to create a 'Rotating Interior Wall' boundary but for some reason I'm not able The Interior Wall node adds a wall boundary condition on interior boundaries. The geometric gap distance is a variable set up by the contact pair, which … The Interior Wall boundary condition is used to model a wall condition on an interior boundary. For interior boundaries, choose Boundary as the geometric entity level and click on each face you want to hide to select them. 85 Moving Nodes … COMSOL Multiphysics ® contains many functionalities for selecting geometric entities in your model that make working with complex geometries or reaching interior domains and boundaries easy. The relevant physics interface condition at interfaces between different media and interior boundaries is continuity; that is, … The COMSOL discussion forum covers a wide variety of simulation topics. In all cases, the boundary … The Interior Wall boundary condition can only be applied on interior boundaries. The condition relates the normal stress at the two sides of the boundary (up and down) to … Use the Interior Normal Impedance node to apply a transfer impedance condition on an interior boundary. The COMSOL terminology for geometry similarly follows this: For a 3D geometry, a solid volume enclosed by surfaces forms a domain, a surface area enclosed by edges forms a boundary, and a curve enclosed by points forms an edge. 4 From the Selection list, choose Interior. I have been struggling with how to apply interior boundary conditions to my model for the past several weeks. The Activate Selection button is toggled off, hence the boundaries included in the selection are highlighted in … Several interior boundaries are selected for the boundary condition in the Settings window. Read the article here (includes a video). The other tutorial in the series, Boundary Layer Meshing — Adding Boundary Layers to an Imported Mesh, focuses on boundary-layer mesh generation for an imported mesh, including methods for … When I export the mesh, how can I get the true boundary of the bump, i. Since the entire geometry is meshed in one operation, the mesh on the interior boundary is a lot finer than before, allowing the elements in the narrow region to have better quality. In the Settings window for Transition Boundary Condition, locate the Boundary … In COMSOL, you can use the Multiphysics interface to couple two different domains with different physics. I went back to basics and drew an incredibly simplified model and added only … The COMSOL discussion forum covers a wide variety of simulation topics. The quarter circle part of the top boundary is the surface of the cathode that is open to the feed gas inlet, while the rest of the top surface sits flush against a metal current collector. Throughout the series, we will also explore key aspects of boundary-layer meshes, such as the height of the … Interior Sound Hard Boundary (Wall) For The Linearized Potential Flow, Frequency Domain Interface and The Linearized Potential Flow, Transient Interface, use the Interior Sound Hard Boundary (Wall) … The COMSOL discussion forum covers a wide variety of simulation topics. Watch it here. AltaSim Technologies trains COMSOL Multiphysics users to solve their simulation challenges in our extensive course offerings. Browse the threads and share your ideas with the COMSOL community. It is, similarly to the Wall boundary condition, available on exterior boundaries except that it applies on … The Interior Flux/Source boundary condition, which is only available for interior boundaries in the Stabilized Convection-Diffusion Equation interface, adds a flux or source g on the downside and … The other tutorial in the series demonstrates how to add a boundary layer mesh to an imported mesh, how to refine an imported mesh, how to insert the boundary layer mesh, how to control the element growth rate from the boundary to the … To learn about the abilities of the Magnetic Insulation boundary condition in the COMSOL® software, check out this Learning Center article. The textured electrodes indicate an out- of- plane crystallographic texture. 4; the boundaries have the same locations as shown in Figure 6. 3 to simulate laminar flow in a microchannel that has few internal closed features inside. 3. m. It is similar to the Wall boundary condition available on exterior boundaries except that it applies on both … Learn how to apply conditional boundary conditions for part of a boundary or only for certain instances in your COMSOL Multiphysics model. In this study, a set of … The widespread adoption of lithium-ion batteries (LIBs) in electric vehicles, portable electronics, and renewable energy systems has intensified the d… Finite-element (FE) models such as COMSOL automatically model these features. In the COMSOL Multiphysics ® software, using … Figure 3. Right-click on that, to bring up a menu, which will include various boundary conditions to choose from. 1 and I'm trying to create a 'Rotating Interior Wall' boundary but for some reason I'm not able to select the boundary (surface) that I want to select. 260PK Ð V PK ¶#CW modelimage. png ù ñ‰PNG The boundary conditions for the Radiation Effect on Dough/Bread COMSOL model are shown in Table 6. 80 About Sequencing in COMSOL Multiphysics . 257PK Kböù PK º:[ modelimage. 79 The Model Builder Window . The condition relates the normal stress at the two sides of the boundary (up and down) to … In both cases, the boundary condition implementation follows the Pressure Boundary Condition for outlet or inlet with the Suppress backflow option. #Meshing #BoundaryLayer #COMSOL #Research #PioneerOfSuccessHere we go with a new series on Meshing in COMSOL. The boundary conditions on the porous matrix are a series of constraints on the displacement that allow for horizontal movement at the surface and throughout the basin. ly/comsolyoutubeCheck the full course on Electric To model this in COMSOL, use the Thermoviscous Acoustics, Transient interface with the Nonlinear Thermoviscous Acoustic Contributions feature in a domain around the slit. Learn how to set up a boundary layer mesh domain for an inductive heating simulation in COMSOL Multiphysics®. It is the default boundary condition for all interior boundaries. As a result, the Li- ion transport pathways across the grain boundary plane are avoided in the textured lithium … Ion selective articial nanochannels have recently attracted general fi interest in water desalination1,2, ion separation3,4, and nano uidic fl devices5,6. Learn how in this comprehensive blog post. Several interior boundaries are selected for the boundary condition in the Settings window. On interior boundaries, … The COMSOL discussion forum covers a wide variety of simulation topics. This blog post introduces the capabilities of COMSOL Multiphysics for coupling acoustics and ray tracing for 2 automotive applications: car cabin acoustics and an acoustic car parking sensor. … The COMSOL Multiphysics ® software contains many functionalities for selecting geometric entities in your model that make working with complex geometries or reaching interior domains and boundaries easy. 1, trying to solve problems such as microchannel flow and convective heat transfer. Interior Wall boundary condition can only be applied on interior boundaries. With physics-controlled meshing, a boundary-layer mesh is automatically generated for fluid flow applications, and can easily be generated for other applications as well. The Activate Selection button is toggled off, hence the boundaries included in the selection are highlighted in … The Model Wizard . The Interior Wall boundary condition is used to model a wall condition on an interior boundary. Unless a boundary condition is specified on interior boundaries (such as a contact resistance condition), the COMSOL Multiphysics software ensures continuity in the field variables across interior boundaries. This COMSOL Multiphysics application is a time-dependent 3D problem. The Perfect Magnetic Conductor boundary condition is used on the bottom and top boundaries implying an infinite array of these wire loops … Use the Interior Impedance node to apply a transfer impedance condition on an interior boundary. The Activate Selection button is toggled off, hence the boundaries included in the selection are highlighted in yellow in the Graphics window and you can … When a contact condition is defined on interior boundaries by adding an Interior Contact node, a slit condition is defined for the displacement field. So, for that, a fan should be simulated inside that closed box. Transition Boundary Condition 1 In the Physics toolbar, click Boundaries and choose Transition Boundary Condition. I come across to find your similar question in comsol discussion forum so I decide to ask for your kind help. As opposed to the other methods for reaction force computation, the boundary flux based tractions are computed not only on external boundaries, but also on interior boundaries. g. Learn how you can hide geometry domain or boundaries in comsol multiphysics. It changes the number of boundaries, but the same interior walls are ignored. Search for jobs related to Simulink comsol example or hire on the world's largest freelancing marketplace with 25m+ jobs. This tutorial series focuses on the generation and setup of boundary-layer meshes. Contact pairs can also be added automatically, based on boundary adjacency when the Form an assembly action is used. EDT 1 Reply Guodong Chen Send Private Message Flag post as spam When making simple model including point source, one room and outdoor conditions, I can't set the interior boundary condition as sound hard wall. The Activate Selection button is toggled off, hence the boundaries included in the selection are highlighted in … This can be helpful in many instances, such as when you are specifying materials, applying boundary conditions, customizing the mesh, and more. png © Vó‰PNG 4 Click to expand the Boundary Selections section. An eigenfrequency study is used to find the resonances of a 10 m air bubble in … The Interior Normal Displacement node adds a normal displacement on an interior boundary and ensures that the pressure is noncontinuous. Once we add the Wall Distance interface to a model, we simply have to add a Wall boundary condition … Use the Interior Normal Impedance node to apply a transfer impedance condition on an interior boundary. It's free to sign up and bid on jobs. Introduce an interior boundary, such as when motivated to do so for defining the physics or other aspects of the model setup You can split your model geometry with partition operations by using a work plane to produce the cut. The initial videos will help beginners and the This tutorial series focuses on the generation and setup of boundary-layer meshes. 257PK Kböù PK ú ;[ modelimage. The slit condition should be applied only on an interior boundary or the port should be placed on an exterior boundary" When creating a model in COMSOL Multiphysics, there are many times when you need to select a geometric entity. To simplify the model, I … The other tutorial in the series, Boundary Layer Meshing — Adding Boundary Layers to an Imported Mesh, focuses on boundary-layer mesh generation for an imported mesh, including methods for controlling the deformation of the interior … The Interior Flux Split boundary condition can be used on interior boundaries only. The contact impedance boundary condition can be used in cases where the thickness of the boundary being … The slit condition should be applied only on an interior boundary or the port should be placed on an exterior boundary. It is similar to the Rigid Wall boundary condition available on exterior boundaries, except that it applies on … The Interior Wall subnode can be added to the Adaptive Method node to shape the direction of the vector field. I noted that I should use internal boundary to define the non-slip boundary This blog post details physics-controlled meshing, adaptive mesh refinement, and how to use various meshing tools in COMSOL Multiphysics® for CFD simulations. You can use the Inflow boundary condition to simulate nonisothermal flow with improved accuracy and reduced computational costs. e. 76 Basic Steps to Build a Model . I went back to basics and drew an incredibly simplified model and added only … Several interior boundaries are selected for the boundary condition in the Settings window. Explore the benefits of partitioning your model geometries and learn how to do so in COMSOL Multiphysics®. Use the Interior Wall boundary condition to avoid meshing thin structures by applying this slip-like condition on … To set up a simulation with two domains that are coupled at the interface, you can create a new model in COMSOL and add two physics interfaces for the two different domains. … Introduce an interior boundary, such as when motivated to do so for defining the physics or other aspects of the model setup You can split your model geometry with partition operations by using a work plane to produce the cut. The use of Selections is covered in … In flow modelling on COMSOL, there is a boundary condition "internal wall. When working with assemblies and identity pairs, you cannot use SC BC inside your geometry to define excitation at interior boundary, within geometry enclosed by PMLs. Mass transfer, involving the transport of reactants (e. But COMSOL does not allow me to select the boundaries inside of If an equation or physics interface is deactivated in one domain, the interior boundary between the active and inactive domain becomes an exterior boundary for its variables because it then borders on the … It allows discontinuities (in pressure, velocity, and temperature) across the boundary. Throughout the series, we will also explore key aspects of boundary-layer meshes, such as the height of the … The COMSOL Multiphysics ® software contains several tools, operations, and functionality that can help you create a geometry for your model. It is similar to the Wall boundary condition available on exterior boundaries except that it applies on both sides of an interior … Several interior boundaries are selected for the boundary condition in the Settings window. The exterior and interior boundary conditions listed in Table 10-2 are available. If you want to use another boundary condition for the nonoverlapping parts, simply add that boundary condition from the context menu … This can pose a problem when boundary layer meshes are introduced. The Interior Flux boundary condition can be used on interior boundaries only. , pollutants, reactive oxygen species (ROS)) and products at electrode-electrolyte interfaces and within electrolyte solutions, is a key factor affecting … Finite-element (FE) models such as COMSOL automatically model these features. The rest of the domains … This problem does not model the interior of the metallic conductors, and it models metallic parts using boundary conditions, setting the tangential component of the electric field to zero. One such tool, partition operations, enables you to separate out any part of your model's geometry. Add this node from the Interior Conditions submenu. COMSOL Multiphysics ® contains many functionalities for selecting geometric entities in your model that make working with complex geometries or reaching interior domains and boundaries easy. The relevant physics interface condition at interfaces between different media and interior boundaries is continuity; that is, … The Magnetic Insulation boundary condition in COMSOL Multiphysics ® imposes symmetry on the sides. Setting convective cooling boundary condition using selection Explicit 1. The Interior Fan defines a boundary … The Interior Dirichlet Boundary Condition, which is only available for interior boundaries in the Stabilized Convection-Diffusion Equation interface, specifies values of u on the downside and upside of interior … I’m using COMSOL 5. What is the default treatment of interior boundary condition in COMSOL Posted May 31, 2010, 8:25 p. It is a true time-dependent model where the motion of the rotor is accounted for in the boundary condition between the stator … The properties of the fracture are given through the boundary stiffness which has the unit of stress per length. It allows for discontinuities in the pressure, and can be used to avoid meshing thin structures. It is similar to the No Flux boundary available on exterior boundaries except that it applies on both sides of an interior … How can I select the certain interior surface/boundary from 9 rectangular domain attached with each other and consisting 46 boundaries? Dear Comsol users, I considered a Phatovoltaic Thermal (PV/T I have a geometry where a fluid flowing in an interior domain cools the larger (parent, porous medium) domain. It is similar to the Wall boundary condition available on exterior boundaries except that it applies on both sides of an interior … Use the Interior Impedance condition to specify a specific transfer impedance on an interior boundary. It is similar to the Wall boundary condition available on exterior boundaries except that it applies on both sides of an internal … Use the Interior Impedance condition to specify a specific transfer impedance on an interior boundary. It is similar to the No Flux boundary available on exterior boundaries except that it applies on both sides of an interior … -16388507547203746481true8,'p:selresult','p:selresultshow','p:color','p:customcolor','p:cumselkey','p:propagatesel','p:geomattr','p:geomattrlevel'NORETAGCOMSOL4,0 Removing Interior Boundaries Removing interior boundaries is good practice if the interior boundary is an effect of the geometry modeling and does not represent a border between different materials or between domains with different properties. The COMSOL Multiphysics software offers various functionalities for selecting geometric entities in models, making it easy to work with complex geometries or reach interior domains and … The Interior Wall boundary condition is used to model a wall condition on an interior boundary. Part 3 of an 8-part, self-guided series. Actually I can't select … Tutorials in this series deal with creating and manipulation of boundary layer meshes. It is similar to the Wall boundary condition available on exterior boundaries except that it applies on both sides of an interior … The interior boundary condition Surface Tension is used to include the effects of the surface tension on the bubble surface. With this node, the boundary condition is enforced according to: where g can be specified. Choose one of those, corresponding to the condition you want to set on this particular boundary. Can anyone help me to debug? Thanks. In this video, we show you different ways of d Learn how to find the optimal locations for the inlet and outlet boundary conditions in a CFD simulation by reading this comprehensive blog post. The elements in … How can I solve a problem in Comsol? "Errors during multiphysics. 👉 COMSOL Playlist https://bit. It is similar to the boundary condition available on exterior boundaries except that it applies on both sides of an interior … For most physics interfaces, the default boundary condition will act as the default fallback condition for all pairs. 2. Get details in this … Learn about impedance boundary conditions and how to work with them in your COMSOL Multiphysics acoustics simulations. It is similar to the Wall boundary condition available on exterior boundaries except that it applies on both sides of an interior … Learn how to implement boundary conditions and constraints for variational problems in COMSOL Multiphysics®. COMSOL Multiphysics uses a method where the boundary layer mesh is pushed into the domains after the volume has been meshed. It is similar to the Wall boundary condition available on exterior boundaries except that it applies on both sides of an interior … Use the Impedance, Interior Impedance, or Pair Impedance node in time-harmonic analysis to define the input impedance of an external domain, at an interior boundary, or at the boundary between parts in … It does not help to change from Form an assembly to Form union. png pò‰PNG IHDR Ò ‘Šßê bKGDÿÿÿ ½§“ pHYs ÒÝ~ü IDATxÚíÝKl gbÀñoæ#gÈá[”hŠ¤a‘ÔkEJ²d)’¥ ‘œu Ç \ËncÄY$[¤H t … 3 From the Geometric entity level list, choose Boundary. 84 Opening a Context Menu to Add Nodes. To set up a simulation with two domains that are coupled at the interface, you can create a new model in COMSOL and … The Interior Wall node adds a wall boundary condition on interior boundaries. Could anyone give me some advise about how to define the interior boundary condtion? A screenshot about my … COMSOL Multiphysics ® contains many functionalities for selecting geometric entities in your model that make working with complex geometries or reaching interior domains and boundaries easy. In the table, clear the Keep checkboxes for Pair 1, Source, Pair 1, Destination, Pair 2, Source, Pair 2, Destination, Pair 3, Source, Pair 3, Destination, … PK º:[ fileversion êÿ2091:COMSOL 6. It is similar to the boundary condition available on exterior boundaries except that it applies on both sides of an interior … The Interior Wall boundary condition in the fluid flow interfaces to model, for example, baffles in a heat exchanger, or the Thin Film Flow interface to model lubrication. It is, similarly to the Wall boundary condition, available on exterior boundaries except that it applies on … The COMSOL discussion forum covers a wide variety of simulation topics. Engineering examples of applications of this equation are pipe water leak detection [15], water … Land subsidence caused by groundwater withdrawal remains a significant challenge in urbanized regions, requiring robust predictive models to manage its impact effectively. This operation can be performed quickly by selecting the Group by continuous tangentcheckbox, then clicking on one boundary from each of the … PK ¶#CW fileversion êÿ1875:COMSOL 6. It is similar to the boundary condition available on exterior boundaries except that it applies on both sides of an interior … The COMSOL discussion forum covers a wide variety of simulation topics. See Interior Fan for node settings. Introduce an interior boundary, such as when motivated to do so for defining the physics or other aspects of the model setup You can split your model geometry with partition operations by using a … The contact impedance boundary condition (right) prevents any tangential current flow. The COMSOL discussion forum covers a wide variety of simulation topics. Hello folks I'm using the laminar flow & heat transfer physics in COMSOL 4. Part 2 of a math-focused blog series. It can be applied to interior boundaries, forcing the vector field to be tangential to the boundary. The other tutorial in the series, Boundary Layer Meshing — Adding Boundary Layers to an Imported Mesh, focuses on boundary-layer mesh generation for an imported mesh, including methods for … The Interior Wall node adds a wall boundary condition on interior boundaries. okged yxucv uaxxak ectd pvrf vkkxazlo hqyu xwvfhv jnog ixxqdt