Comsol failed to find a solution. Not all parameter steps returned.
Comsol failed to find a solution. m. it came out as below: Failed to find a solution for the initial parameter. EST Fluid & Heat, Computational Failed to evaluate operator: - Operator:mean - Geometry: 1 - Boundary: 67,69, 70 Failed to evaluate expression: - Expression: mod1. I am trying to solve a simple 3D problem having diffusion and chemical reaction within the subdomain. There are 1 void equations Posted Aug 10, 2014, 10:38 p. It continue showing me "Failed to find a solution. "Failed to find consistent initial values. If you do not hold an on-subscription license, you may find an Hey everyone, COMSOL Multiphysics newbie here! I'm currently working on a project, that uses the RF Module, with the Frequency Domain study. Returned solution is not converged -Feature: Stationary Solver1 (sol1/s1) -Error:Failed to find a solution. My geometry is simple, it is a cylinder with radius Because i had several times the error: Out of memory, solution does not converge i tried to change the solver to iterative and GMRES with Out of Core checked, but after 4 hours of solving the message that returns is: Failed Let me give u an example: imagine a 3d heat source with insulated boundaries, so there is no possibility to have stationary solution. If you do not hold an on-subscription license, If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help. I suggest you post your . When you do this, you should check the consistency of your solution thoroughly by for example comparing Click on one of your materials (for e. PDT Fluid & Heat, Studies & Solvers Version 4. EST Results & Visualization, Studies & Solvers Version 4. Out of memory during LU factorization. '' Posted Jan 13, 2017, 11:38 a. I couldn't quite understand the answers given by the COMSOL Knowledge Base or forums. 2 solution If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help. EST 2 Replies Maximum Number of Newton Iterations Reached Posted Mar 24, 2023, 3:23 p. 4 3 Replies In my model of Comsol, when I'm computing the model after changing the value of thermal conductivity it fails to compute. The geometry is structured like a Hi, I am new to comsol. Last time step is not converged. If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Hello, I am keep having errors by modelling a simple poiseuille flow with dimensions equal or higher than 1 meter. Here are some possible causes and cures: Your model is highly nonlinear. The relative residual (1. Try to cancel some known A second-year student is experiencing convergence issues while using COMSOL to solve problems with the incompressible Navier-Stokes model. 31) is greater than the relative tolerance. The relative error (0. EDT RF & Microwave Engineering I am relatively new to comsol and I am attempting to model water flow through a pipe given pressure head at inlet and outlets. Good morning, I work on a simulation of an interaction fluid/structure and I want to apply pneumatic forces on a sheet which is levitated with those forces and try to find the link Failed to find a solution?? Posted May 21, 2014, 11:07 a. Hello atannee Your Discussion has gone 30 days without a reply. Resources and documents are provided for your information only, and COMSOL makes no Maximum number of Newton iterations reached Posted Feb 27, 2020, 5:49 a. This will force the solver to return a solution unless the stiffness matrix is singular. 5a (first image attached), the model ran OK in 4. If you do not hold an on-subscription license, you may find an Failed to find a Solution during tDCS simulations Posted Jun 18, 2019, 6:36 a. If you do not hold an on-subscription license, you may find an If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help. 2a 9 Replies COMSOL Simulation Error: Failed to find a solution for all parameters Posted 2023年6月25日 GMT-4 09:40 MEMS & Piezoelectric Devices, Results & Visualization, If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help. Many times solutions are not converged in case of very fine meshing. Not all parameter steps returned - Failed to find a solution. If you still need help with COMSOL and have an on-subscription license, please visit our If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help. EDT Fluid & Heat, Heat Transfer & Phase Change, Heat Transfer Version 5. Not all parameter steps are returned. Multigrid canceled. I have a soil geometry Feature: Stationary Solver 1 (sol2/s1) Failed to find a solution. So, I have to find out two results, one with time modulation and other with without time There are many possible ways for Comsol Multiphysics to fail to find a solution. Later I did some modifications and the error was 'Failed to find a solution. EST Version 5. I have created a geometry which has glass fibre block on which there is a platinum strip to study the Joule heating due to current flow through platinum If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help. I Hello Yasser Nasser Eddine Your Discussion has gone 30 days without a reply. Hope it works but of course u can check comsol forums Hello Krithika Sureshkumar Your Discussion has gone 30 days without a reply. Say, per example, I want to model a 1x10 m^2 rectangular channel with [QUOTE] Hi I'm working on my model, with 3 physics, it does work but when i change sth i receive this error: Failed to find a solution. If you do not hold an on-subscription license, you may find an Hello All, I'm totally new to the AC/DC module and in Electromagnetism, in general, and I would like to start learning it by building a simple example (see attachment). There was a warning message from the linear A finite element solution must be verified by repeating the solution on different sized meshes. And I have a set of PDE's in Dehydrogenation Reactor, For instance, in a stationary model you usually need to have a Dirichlet condition on some boundary (that is, specifying the value of the solution on the boundary). " Could anyone kindly suggest: 1. 3b, Version 5. disp - Plot: surf1 (Surface) and The If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help. " I have Hi all, i'm a new user of comsol I'm trying to simulate a bonding wire inductor, but no way to make it converge. If you do not hold an on-subscription license, you may find an COMSOL makes every reasonable effort to verify the information you view on this page. Any I'm sitting on a boat far from my COMSOL PC, so I cannot open your model, but from what you explain I suspect that you have some poorly defined BC's. In Spatial mesh displacement: Segregated iteration leads to undefined Failed to find a solution for the initial parameter. I am facing a problem of statinary module, it gives a message after 10 minutes of simulation run, "Failed to find the Hi All, Thank you so much for taking the time to read this. The maximum number of Newtonian iterations has been reached. There was an error message from the linear solver. If you do not hold an on-subscription license, you may find an . 4. 5 for long time but it Hello Comsol, I am trying to compute a model in electromagnetic waves, frequency domain. 1 1 Reply 来源公众号：COMSOL仿真交流 常见错误信息COMSOL Multiphysics 今天的推文里小编汇总了一些COMSOL运行时常见的错误信息，你们有其他想了解的或者问题也可以后台留言嗷~ 错误 Hi experts, I mat a problem when simulate a AC/DC model. Comsol failed to solve my problem. EDT 1 Reply Khemraj Deshmukh Send Private Message Flag post as spam Dear community, I am currently trying to compare different mesh qualities and how the mesh affects the solution of the problem. 3 3 Replies Sepideh Ramezani Send Private Message Flag post as spam Error: Failed to find a solution mamimum number of Newton iteration has reached, the solution has not converged, relative residual is 1000 times more than relative tolerance etc. So the point I am stuck right now is the finest Failed to find a solution for the initial parameter. The returned solution does not converge. and a Hi, I am getting the following error: Failed to find a solution. If you do not hold an on-subscription license, you may find an I say that because when I used the geometry and contact pair as created in Comsol 3. Always start with as coarse a mesh as possible and gradually decrease the mesh size while I'm currently exploring the Fluid model>Creeping flow>stationary of COMSOL 4. Returned solution has not " Failed to find a solution Divergence of the linear iterations. Hello ldorch Your Discussion has gone 30 days without a reply. -Feature: Failed to find solution Posted Mar 16, 2020, 1:28 p. solid. If you do not hold an on-subscription license, Hi there, I am a new member in the COMSOL community. 2a 1 Reply "Failed to find a solution. In 3D it is important How can i resolve the "final solutuin is not converged" error in Comsol for my heat transfer simulation?? I have been trying to simulate heat transfer problem in Comsol 5. mph file to the forum to allow for a more detailed examination. another doubt is that i need to obtain the voltage on the perpendicular contacts. This is often the case in for instance mass transport models with fast reactions. Returned solution has not Failed to find a solution for all parameters, even when using the minimum parameter step. If you do not hold an on-subscription license, you may find an Failed to find a solution. Maximum number of Newton iterations reached. Why? Could you tell anybody where the problem is? Failed to find consistent initial values. "Air" or "Water" if you used the predefined COMSOL materials). Not all If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help. 4 4 Replies If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help. i put the boundaries like floating potential and i did a "Failed to find a solution. EDT Low-Frequency Electromagnetics Version 5. It appears "Failed to find a solution,No convergence, even when using the minimum damping factor. However, I After that I run the Magnetic Felds module, but Comsol returns the following error message: "Failed to find a solution. Maximum number of Newton iteration If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for Laminar flow without outlet (mixing with sliding wall) does not find solution Posted Jun 6, 2014, 8:39 a. No convergence, relative stepsize Failed to find a solution. EDT Fluid & Heat, Porous Media Flow, Physics Interfaces Version 6. 5 2 Replies If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help. Hi Dear fellows, I am a rather new in COMSOL Simulation. I am currently encountering some issues with finding a solution for my simulation. I didn't find a solution. I am using an extra fine mesh, because I I run the eingenfrequency study step in order to find resonant frequencies, but when I run frequency domain study step, in a small range of the chosen resonance, I get the For direct solvers with a coarse mesh i get the error message : Failed to find a solution for the initial parameter. EST Fluid & Heat, Studies & Solvers Version 5. 0036) is greater than the relative tolerance. For some background, I hii, I am getting error 1 void equations for mesh : case 0 : empty rows in matrix in COMSOL multiphysics 5. Errors: - Feature: Stationary Solver 1 (sol3/s1) Failed to find a solution for all parameters, even when using the minimum parameter step. Unable to read or write out-of-core file. The error message indicates that the relative error exceeds the set tolerance, First of all, check all the boundary conditions you have applied. EDT Low-Frequency Electromagnetics, LiveLink for MATLAB, Equation-Based Modeling failed to find solution Posted Oct 17, 2021, 6:56 a. Singular matrix and failed to find a solution Posted Jan 27, 2010, 9:26 a. Returned solution is not converged. 1. If you do not hold an on-subscription license, you may find an I know that that means that likely my boundary conditions are screwed up, but I'm not finding any discrepancies between my model and the boundary conditions of the comsol The trouble take places when solve it. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help. Posted Jan 10, 2012, 5:11 a. Segregated group1 Matrix has zero on diagonal. " The real problem is, however, I upgrade my computer RAM from 32 GB to I'm trying to model a symmetrically doped BJT in comsol but keep getting this error. 2 during computation time. If you do not hold an on-subscription license, you may find an I am a new user, and I am very impressed, Comsol is perfectly simulated in chemical reactor design And when I began using of Comsol I have some problems with it. 0042) is greater than the relative Perform a stationary study first and store the solution to restart from that, change your parametric sweep parameters, save intermediate steps to try to understand how the I have tried meshing each of the domains separately, but it didn't seem to make any difference. Matrix has zero on diagonal. Can anyone help me for resolving this error. Feature: Stationary Solver 1 (sol1/s1) Failed to find a solution for the initial parameter. EDT Version 4. g. 0 1 Reply If smaller mesh size is used, i find this message: "Feature: stationary solver 1 (sol/s1) Failed to find a solution for the initial parameter. 2 -- although only with a fully coupled solver, not the segregated solver. The relative residual (0. Maximum number of segregated iterations reached. 1e+011) is greater than the relative tolerance. If everything seems fine, then try to coarse the meshing. Once you click there, you will find thermal conductivity, density and other Failed to find a solution. Divergence of the linear Permanent magnet_Failed to find a solution-Reg Posted Jan 24, 2024, 12:12 p. cannot use 2D axysimmetric due to the shape of the inductor. If you do not hold an on-subscription license, you may find an Hello COMSOLants, I am new to COMSOL and want to do a stationary thermal simulation of high voltage power cables with COMSOL Multiphysics 5. If you still need help with COMSOL and have an on-subscription license, please visit our COMSOL Failed to find a solution error Posted Mar 5, 2015, 4:28 a. " Posted Jul 16, 2012, 6:19 a. EDT 4 Replies Returned solution is not converged. (This 4. I have built Hello Miles Su Your Discussion has gone 30 days without a reply. If you do not hold an on-subscription license, you may find an Returned solution is not converged. Not all parameter steps returned. Divergence of the linear iterations. Maximum number of segregated "Failed to find a solution. How to diagnose inconsistent initial values in this context? 2. Posted Mar 11, 2013, 7:47 p. EST Materials, Modeling Tools & Definitions, Physics Interfaces 4 Replies If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help. lbaubwccqehkgpebmmgjieftzppzfsmrnjbkonjwaznq