For spreadsheet data, the first columns contain the arguments (typically spatial coordinates); the following columns can contain one or more functions, and the positions entered are the relative position for each function’s data column.For unstructured interpolation data, COMSOL Multiphysics may ...
I would like to use a interpolation function as a boundary condition. I want to set a temperature distribution as boundary condition. The file that I´m using for the interpolation is the one I have gotten from other comsol program. It has the following structure: ...
I am a COMSOL newbie and need some help on defining time dependent interpolation function. I have a pretty simple model, a sphere. I need to define an volumetric force input F( t, r, z )as below, which varies both with time and space: F( t, r, z ) = I * sin(t) * f( r ...
For unstructured interpolation data, COMSOL Multiphysics may internally apply a scaling of the coordinates of the data points to simplify the process of creating an interpolation mesh. Use the Internal scaling of data points list to control this functionality. Select Automatic (the default) to apply ...
Interpolation functionLogin
all of the weights and we can then evaluate the sum of our weighted RBFs at any other point in the xy-plane, giving us a smooth interpolation function. Let’s now look at how to compute these weights and visualize the interpolation function using the core capabilities of COMSOL Multiphysics...
I have some significant experience with COMSOL. COMSOL is FEM-based. After it has solved a problem using a gross mesh, I can ask for a field value at a given point. This is not a problem and is performed using the basis functions chosen for that particular element. ...
[comsol]求协调初始值失败,奇异矩阵。 求协调初始值失败。 奇异矩阵。有。 变量 comp1.mf.psi的25229 空方程(矩阵中的空行)。在坐标: (-0.0960383,-0.102881,-0.103172...里面的电导率为0,出现这个问题。解决办法: 将电导率设置部位0 就行了 变换算法和变换方程 ...
For unstructured interpolation data, COMSOL Multiphysics may internally apply a scaling of the coordinates of the data points to simplify the process of creating an interpolation mesh. Use theInternal scaling of data pointslist to control this functionality. SelectAutomatic(the default) to apply the ...
2. I exported the solution 1 on the boundary as a 1D Line Graph at all times as a spreadsheet. Then I changed the exported txt file to the standard COMSOL spreadsheet column1=x column2=t and column3=u(x, t) It looks like: