Hi everybody,
the 3D model attached has a swept mesh with 3468 hexahedral elements and the solver solves for 31395 degrees of freedom; while solving, the request for RAM "explodes" and becomes larger than 25 GB (causing a "Out of memory during assembly" error). I used a Heat Transfer module in COMSOL 4.1; solver: Time Dependent, Time Step 0.1 s (respecting the rule dt > rho * Cp / k * dL^2; dt = Time Step, rho = density, Cp = heat capacity, k = thermal conductivity, dL = meshing element size). k is anisotropic (this is the reason for large difference in meshing element size along different directions).
In other models I built in the past, there where much more mesh elements and degrees of freedom (nearly one million) and the request for RAM was much lower (in line with other threads in the Community Forum: http://www.comsol.eu/community/forums/general/thread/23213/).
Has anyone an idea why happens this? Thank you
the 3D model attached has a swept mesh with 3468 hexahedral elements and the solver solves for 31395 degrees of freedom; while solving, the request for RAM "explodes" and becomes larger than 25 GB (causing a "Out of memory during assembly" error). I used a Heat Transfer module in COMSOL 4.1; solver: Time Dependent, Time Step 0.1 s (respecting the rule dt > rho * Cp / k * dL^2; dt = Time Step, rho = density, Cp = heat capacity, k = thermal conductivity, dL = meshing element size). k is anisotropic (this is the reason for large difference in meshing element size along different directions).
In other models I built in the past, there where much more mesh elements and degrees of freedom (nearly one million) and the request for RAM was much lower (in line with other threads in the Community Forum: http://www.comsol.eu/community/forums/general/thread/23213/).
Has anyone an idea why happens this? Thank you