How to define a value that is evaluated through iteration in COMSOL 4.0Login
is the dependent variable. By the definition of the divergence of the gradient of a scalar variable, I assume what I should do is define avariablein COMSOL like below Laplacian_xi=d(d(xi,x),x)+d(d(xi,y),y) which corresponds to . However, if I put Laplacian_xi in ...
This is true according to common sense. But in the numerical model it's different. I define a homogenous initial temperature for a domain. When I choose a different boundary temperature, then this changes the COMSOL model initial temperatur field even at the time t=0. I.e. it ove...
Our laser heating model already defines aGlobal Parametercalledemissivity, which is a constant value of 0.8 and is used within the model to define both the absorbed and radiated heat. We can remove this constant global definition and instead define a state variable over the top surface, of the...
(rp-var-define 'my_monitor 0.0 'real #f)That defines a variable called my_monitor, and it has a real type and an initial value of 0.2. Write the report value into the variable defined in step 1. For example, if we want to write the mass flow rate into my_monito...
Let’s now see how the generation of images can be made automatically after solving a model in COMSOL Multiphysics. To be able to define a sequence of operations under theStudynode, enableSolver and Job Configurations. This option is available in theShow More Optionsdialog available from the Mo...
Discussion ClosedThis discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one,click here. how to define a variable in livelink with matlab which changes in a loop?
I mis-typed an entry in the variables in the global definitions. I used this variable name to define a boundary temperature. COMSOL complained correctly that the unit was wrong. I corrected the entry in the global variable definition, but the error message in the Heat Transfer module, where ...
(4,solid.sx)rather thansolid.sx, you will plot a stress that is smooth over the element. In this case, the nonlinear stress–strain relation is evaluated only at the Gauss points where it is already fulfilled. Then, a least-squares fit of the Gauss point values is used to define a ...
Now that we have the curve objects that define the outline of each cross section of the head, we can create the solid shape with theLoftoperation. TheLoftoperation is one of the geometry modeling tools included inthe Design Module. Before setting up theLoftoperation, we need to make sure th...