Error while processing
Sir, While computing the results for my model, I got an error which says" Failed to find consistent initial values. Segregated group 2 Out of memory during assembly. Last time step is not converged. -...
View ArticleHeat loss in hydraulic hose
Hi, I'm working on an project where it's in my interest to find the heat loss to the surroundings, from the hydraulic fluid inside a hose. I have access to Comsol Multiphysics 4.3 through my work and...
View ArticleRF Source
Hi, I want to apply a current or a voltage source to a rectangular surface in a COMSOL RF module problem. Would you please let me know how I can do that? Regards, Elham
View ArticleInconsistent uni-directional constraint with Conjugate Heat transfer
I am trying to model a simple high temperature hydrogen heat exchanger with the conjugate heat transfer module. While I have been sucessfull in modeling individual tubes of the hydrogen alone, I cannot...
View ArticleAdding a Faxen Force on Stokes drag force in Particle Tracing Module
Hi everyone, I am trying to use the particle tracing module with a non-uniform laminar flow in a channel. I am using "Drag Force" to trace the particles' motion. However, the Stokes force is defined...
View ArticleFailed to find the consistent initial values
Dear sir, I am getting an error after solving as follows"Failed to find the consistent initial values Last time step is not converged. - Feature : Time - Dependent Solver1 (sol1/t1) - Error : Failed to...
View ArticleHow to reduce numerical diffusion problem when simulating micromixing
Hello Comsol friends, I have a short question - my simulations of micromixing exhibit rather fast mixin compared to the measured results, especially at high Peclet numbers (~ order of Pe~ 10 000). I've...
View Articlehello!
hello! are you Persian? I am Persian. can you help me about problem in comsol? best regards
View ArticleHow do I model two different fluids in one domain?
Hi, I am new to COMSOL, and am trying to model a microfluidic device that has two fluids, each with a different conductivity. I tried building a geometry with two domains that are a union with an...
View Articleexporting 3D simulation's output data from model 1 and importing as input...
Hi, I am trying to simulate on micro-mixer with 3D structure. I am having trouble with importing the model 1 output data to the model 2 input profile correctly. I tried using the interpolation function...
View ArticleInductively coupled plasma-High vacuum-Laminar flow-Free Molecular Flow-times...
hello! *** first question: I try to simulate the device using the PLASMA MODULE (inductively coupled plasma) and LAMINAR FLOW in a vacuum (10 millitorr). The problem is that when I run the solver, had...
View Articleabout 'Warning : Re-ordering of null vectors failed"
Dear all, I'm trying to simulate the dynamic behaviors of the linear control solenoid valve. The spool motion is determined by the force balances, which are calculated from each field, and a...
View ArticleConsistent error while computing the results for the model built
Sir.. I am working on a building model with pipes embedded in the ceiling for Concrete Core Cooling. I am getting a continuous error even after many corrections. The error says Failed to find...
View Articlehow to enter a Channel thickness
Hi everybody, how to enter the Channel thickness? I use the (laminar flow -> mass flow -> mass flow rate -> normal mass flow rate), but get an error! I read a comsol documentation and I think...
View ArticleJoule Heating and Laminar Flow in microfluidics
I'm trying to find the temperature distribution in a microfluidic channel. The heat is generated by two electrode in a microfluidic channel. When I create the model without laminar flow everything...
View ArticleParticles traveling through boundaries
Hello All, I am attempting to use the particle tracing function on a laminar flow in a small channel with obstructions in the channel. I modeled the design after the lunchtime seminar on the particle...
View ArticleHeat loss in hydraulic hose
Hi, I'm working on an project where it's in my interest to find the heat loss to the surroundings, from the hydraulic fluid inside a hose. I have access to Comsol Multiphysics 4.3 through my work and...
View ArticleRF Source
Hi, I want to apply a current or a voltage source to a rectangular surface in a COMSOL RF module problem. Would you please let me know how I can do that? Regards, Elham
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