error of 'Failed to find consistent initial values'
Dear all, I have been trying to develop heat transfer (laser pulse model), but After building model when I run the program, COMSOL showing me error .......
View Articlesolution of Navier-Stokes equation for shear modulus reconstruction
Hello I am solving Navier-Stokes equation for shear modulus estimation with comsol and livelink for matlab. The equation i have to solve in comsol is ∇.μ∇u+∇(λ+μ)∇.u=0 But i can not find this form in...
View ArticleHow to Solve NonLinear PDEs
Hi everyone! I'm new in Comsol (I started just 2 days ago). I read that Comsol is powerful because you can add your own PDE in the model. I'm trying to use the "equation based model" to solve my own...
View Articleconverting a general form of PDE to weak form PDE
Hi all , I am going to define a weak form of PDE on boundaries of a cylinder based on 4 dependent variables V_m, m, n , h. The following equations need to be converted to weak form but I do not know...
View Articleerror of 'Failed to find consistent initial values'
Dear all, I have been trying to develop heat transfer (laser pulse model), but After building model when I run the program, COMSOL showing me error .......
View Articlesolution of Navier-Stokes equation for shear modulus reconstruction
Hello I am solving Navier-Stokes equation for shear modulus estimation with comsol and livelink for matlab. The equation i have to solve in comsol is ∇.μ∇u+∇(λ+μ)∇.u=0 But i can not find this form in...
View ArticleHow to Solve NonLinear PDEs
Hi everyone! I'm new in Comsol (I started just 2 days ago). I read that Comsol is powerful because you can add your own PDE in the model. I'm trying to use the "equation based model" to solve my own...
View Articleconverting a general form of PDE to weak form PDE
Hi all , I am going to define a weak form of PDE on boundaries of a cylinder based on 4 dependent variables V_m, m, n , h. The following equations need to be converted to weak form but I do not know...
View ArticleError in sweep. The following feature has encountered a problem:
Hello, This is a problem i am encountering in trying to rum my simulation with COMSOL 5.1. I can't seem to get past here. Attached herewith is my .mph comsol file, you just need to run it and see the...
View Articleerror of 'Failed to find consistent initial values'
Dear all, I have been trying to develop heat transfer (laser pulse model), but After building model when I run the program, COMSOL showing me error .......
View Articlesolution of Navier-Stokes equation for shear modulus reconstruction
Hello I am solving Navier-Stokes equation for shear modulus estimation with comsol and livelink for matlab. The equation i have to solve in comsol is ∇.μ∇u+∇(λ+μ)∇.u=0 But i can not find this form in...
View ArticleHow to Solve NonLinear PDEs
Hi everyone! I'm new in Comsol (I started just 2 days ago). I read that Comsol is powerful because you can add your own PDE in the model. I'm trying to use the "equation based model" to solve my own...
View Articleconverting a general form of PDE to weak form PDE
Hi all , I am going to define a weak form of PDE on boundaries of a cylinder based on 4 dependent variables V_m, m, n , h. The following equations need to be converted to weak form but I do not know...
View ArticleError in sweep. The following feature has encountered a problem:
Hello, This is a problem i am encountering in trying to rum my simulation with COMSOL 5.1. I can't seem to get past here. Attached herewith is my .mph comsol file, you just need to run it and see the...
View ArticleEquations Based Modeling
I am trying to use the PDE coefficient form to solve the equation below, is there a way I can input this into comsol? ut +2*v*gradu + u/S div (S*v)=f where S = C (1-u) + sig (x); and v = grad...
View Article"Add Physics" window not showing
The below post is related to an archived discussionToday I created a new Comsol study, beginning with just "laminar flow" as Physics. When I wanted to add a "heat transfer" Physics, I right clicked on...
View ArticleHelp please, seismic difference in fluid penetrating
I have designed a model to simulate the difference after fluid penetrating in solid ,I used pressure acoustic and two- phase-Darcy ,but the pressure aoustic can only compute the solid regardless of the...
View ArticleConsistent initial values+Last timestep
Can anyone help me out in this error-Failed to find consistent initial values. Last time step is not converged.
View ArticleHow to change direction of heat flux from inward to outward?
Hi, I'm trying to model a room filled with air that has a stove at one end. I want to define heat fluxes on three of my walls that are pointing outwards from the room. COMSOL seems to define heat flux...
View ArticleEigenfrequency Analysis, One domain acting on another
Hi,I would like to know if it is possible to use an eigenfrequency study to analyze the effects of the vibration of one domain on another, and find the modes. For instance a thin film which is the...
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