Elmer Discussion Forum

Hi, Unfortunately this reply comes all too late, but eventually I just came across with a similar problem. I found that some of the CMakeLists.txt files located in the test case directories ../fem/tests/* missed a line INCLUDE(test_macros) After adding these the problem disappeared. This has now bee...

Hi, Unfortunately it seems that if relaxation is applied (the value of the keyword Nonlinear System Relaxation Factor differs from the unity), the value of the nonlinear iteration counter is hassled and not intuitive. I found that one would get more sensible values for the iteration counters if rela...

Hi, The elasticity solver doesn't yet offer a clean interface which would systematize the endeavour of adding new material models to it. The material models it now offers have been added one by one without a proper effort of trying to systematize the design. So I would say that currently adding a ne...

Hi, An equal-order approximation of the unknown fields is not numerically stable. In principle one could apply the second-order approximation of the velocity together with the first-order approximation of the other fields, but this strategy has not been implemented into this solver. Thus the availab...

Hi, If the mesh files define a 3-D geometry, then I don't see immediately from the sif file why the solution is trivial because the given BCs should create a source. This solver is completely independent and doesn't need a Helmholtz solution to be solved first. Perhaps I would first check that the b...

Hi, It seems that the BCs specified in the sif file might be too slippery to make the temperature fluctuation unique (do-nothing BC implies that grad T.n = dT/dn = 0 is given throughout the boundary, so a solution to the heat equation can only be unique up to an additive constant). In addition to ma...

Hi, Yes, 2-D edge elements over triangles and quadrilaterals have been implemented, so building a solver based on 2-D edge elements should be possible. The warning message EdgeElementInfo: Traces of 2-D edge elements have not been implemented yet relates to a situation where one tries to call the fu...

Hi, It seems to me that Elmer produces results which are in agreement with what is specified in the sif file while I don't understand how they are interpreted to be incorrect. The instantaneous pressure p(x,t) reproduced from the complex-valued Elmer solution P(x) is a function of place x and time t...

Hi,

I found that the keyword command "Magnetic Boundary Load im 2" unintentionally had two whitespace characters between "Load" and "im". This has now been fixed in the code. This might have an effect here.

-- Mika

Hi, As far as I know, a way to compute the circulation of the vector potential A around the bounding curve C has not been implemented directly. However, the postprocessing solver (MagnetoDynamicsCalcFields) should be able to compute the quantity mfa = \int_S (curl A) . n dS / Area(S), with n unit no...