# ComputeDevStressNS

From Elmer Wiki

**Name of the source code file:** ComputeDevStressNS.f90

**Name(s) of contained subroutine(s):** ComputeDevStress

**Name(s) of contained function(s):** ---

**Description of** **ComputeDevStress**:

Module containing a solver for computing deviatoric or Cauchy stress from flow solution. For a 2D simulation there are 4 DOFs (S11, S22, S33, S12), for a 3D simulation, 2 additional are being solved for (S11, S22, S33, S12, S23, S31).

**Keywords of** **ComputeDevStress**:

Solver 1 Equation = String "StressSolver" Procedure = File "ComputeDevStressNS" "ComputeDevStress" ! this is just a dummy, hence no output is needed !----------------------------------------------------------------------- Variable = -nooutput "Sij" Variable DOFs = 1 ! the name of the variable containing the flow solution (U,V,W,Pressure) !----------------------------------------------------------------------- Flow Solver Name = String "Flow Solution" Exported Variable 1 = "Stress" ! [Sxx, Syy, Szz, Sxy] in 2D ! [Sxx, Syy, Szz, Sxy, Syz, Szx] in 3D Exported Variable 1 DOFs = 6 ! 4 in 2D, 6 in 3D Linear System Solver = "Iterative" Linear System Iterative Method = "BiCGStab" Linear System Max Iterations = 300 Linear System Convergence Tolerance = 1.0E-09 Linear System Abort Not Converged = True Linear System Preconditioning = "ILU0" Linear System Residual Output = 1 End Material 1 ... ! we want to have the Cauchy stress !---------------------------------- Cauchy = Logical True Viscosity = Real 1.0E13 End

--Tzwinger 07:38, 1 October 2009 (UTC)