Help!Numerical Error:IterSolver Iterations:too many iterations were needed!
Posted: 15 Nov 2021, 16:56
The procedure can run before,but recently,I run the procedure in a new machine, it doesn't work,errors!
Who knows？please！Error !too many iterations were needed ! in the navier-Stokes equations!
Who knows？please！Error !too many iterations were needed ! in the navier-Stokes equations!
Code: Select all
Solver 4
Equation = "Navier-Stokes"
Stabilization Method = String Stabilized
Flow Model = Stokes
Exported Variable 1 = -dofs 1 "dSdt"
Exported Variable 2 = -dofs 1 "dS"
Exported Variable 3 = -dofs 1 "ZbDEM"
Exported Variable 4 = -dofs 1 "ZsDEM"
Linear System Solver = Iterative
Linear System Iterative Method = BICGStab
Linear System Preconditioning = ILU0
Linear System Convergence Tolerance = Real 1.0e-4 !8
Linear System Max Iterations = 500
Linear System Residual Output = 500
Linear System Abort Not Converged = True
Nonlinear System Max Iterations = 50
Nonlinear System Convergence Tolerance = 1.0e-3 !5
Nonlinear System Newton After Iterations = 5
Nonlinear System Newton After Tolerance = 1.0e-02
Nonlinear System Relaxation Factor = 1.00
Steady State Convergence Tolerance = Real 1.0e-3
End