Elmer Discussion Forum

Hi Elmer team, Elmergrid at present isn't coded so as to be able to import a mesh from Gmsh with second order prisms (Gmsh type 13, 18-node second order prism (6 nodes associated with the vertices, 9 with the edges and 3 with the quadrangular faces))? and presumably Elmersolver & Elmersolver_mpi...

Hi Matthias,
I recently compared a CFD run on ubuntu 16.04LTS and windows 7 pro 64 running 8 threads using elmersolver_mpi and found no appreciable difference in solver times between the 2 OS's.
HTH
Regards
Mark

Hi Matthias, Your first suggestion gives the following: ERROR:: Model Input: Unknown input section name: n whereas your second suggestion generates this: ERROR:: Model Input: Unknown input section name: matc n = if(alpha <= 1/3) 2.0; else 2 + 0.3*(alpha - 1/3); Thank you for the suggestions and tryi...

Hi Matthias,
Unfortunately I get a similar error:

Solver input file error: MATC ERROR: Expecting identifier, constant or leftpar.

...offending input line: n = if(alpha <= 1/3) 2.0; else 2 + 0.3*(alpha - 1/3);

Regards
Mark

Hi Matthias, Thanks for the suggestion but I still get an error see below. ELMER SOLVER (v 8.3) STARTED AT: 2018/03/26 14:48:58 ParCommInit: Initialize #PEs: 1 MAIN: MAIN: ============================================================= MAIN: ElmerSolver finite element software, Welcome! MAIN: This pro...

Hi All, I want to define a constant which depends on the value of other per-defined constants in the sif file above the Simulation section, i.e. Header CHECK KEYWORDS Warn Mesh DB "." "." Include Path "" Results Directory "" End !! parameters all in SI units $...

Hi Peter, Surely this is not enough as it produces lots of of warnings about Nonlinear System Convergence Tolerance not found etc? and the output is just the boundary condition values. So what values would you advise for Steady State Convergence Tolerance = Nonlinear System Convergence Tolerance = N...

Hi All, I've finally updated to the Ubuntu distribution so as I can use the Mumps solver, can someone send me a minimal solver setting for N-S using Mumps for use in my sif files please? There are various sif's in the examples using Mumps but they all seem to include iterative solvers as well or the...

Hi All, Thanks Anil for the link on the Spatial posts and other helpful suggestions. As I posted before I am getting some useful results for a cylinder of paraffin wax like material melting in serial mode (axi symmetric simulation) with a fully quadrilateral mesh but when I try to solve in parallel ...

Hi Peter and Elmer users, In the models manual for the heat equation, under the Equation section it has various settings for Phase Change Model, Spatial 1, Spatial 2 and Temporal, now in my cartesian problem I use Spatial 2 as that was what Julien Givernaud used in his simulation, now when I change ...