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sunfluidh:homedata_poissonsolver_namelist

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sunfluidh:homedata_poissonsolver_namelist [2021/02/11 09:59] – [SolverName] yannsunfluidh:homedata_poissonsolver_namelist [2021/04/12 16:30] (Version actuelle) yann
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 ===== Namelist "HomeData_PoissonSolver" ===== ===== Namelist "HomeData_PoissonSolver" =====
 <WRAP info> <WRAP info>
-This namelist contains all parameters on the iterative solvers and the nV-cycle multigrid method directly implemented in the code for solving the Poisson's equation ("homemade" development). The iterative solvers are based on the Successive Over Relaxation methods (SOR).+This namelist contains all parameters on the iterative solvers and the nV-cycle multigrid method directly implemented in the code for solving the Poisson's equation (in-house development). The iterative solvers are based on the Successive Over Relaxation methods (SOR).
 </WRAP> </WRAP>
 <note important> <note important>
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        * __SOR-Redblack__     : Successive Over Relaxed solver based on a "Red-Black" algorithm (useful with OpenMP-parallel computations or MPI domain decompositions because it can ensure the replicability of the solution whatever the number of MPI Processus and OpenMP threads).        * __SOR-Redblack__     : Successive Over Relaxed solver based on a "Red-Black" algorithm (useful with OpenMP-parallel computations or MPI domain decompositions because it can ensure the replicability of the solution whatever the number of MPI Processus and OpenMP threads).
        * __SOR-Redblack-MPI__ : Successive Over Relaxed solver based on a "Red-Black" algorithm optimized for the domain decomposition approach (MPI-parallel computations). ** DO NOT USE IT IN Hydrid parallelisation (MPI+ OpenMP)**.        * __SOR-Redblack-MPI__ : Successive Over Relaxed solver based on a "Red-Black" algorithm optimized for the domain decomposition approach (MPI-parallel computations). ** DO NOT USE IT IN Hydrid parallelisation (MPI+ OpenMP)**.
-       * __SOR-Redblack-MPIOMP__ : Successive Over Relaxed solver based on a "Red-Black" algorithm optimized for the domain decomposition approach (MPI-parallel computations) and Multi-threading (OpenMP) parallelism.+       * __SOR-Redblack-MPIOMP__ : Successive Over Relaxed solver based on a "Red-Black" algorithm optimized for the domain decomposition approach (MPI-parallel computations) and the multi-threading parallelism (OpenMP)
 +       * __SOR-RRB__ : Successive Over Relaxed solver based on a "Red-Black" algorithm with optimization based on data reordering. This method can be used for MPI-parallel computations but it is not yet ready for OpenMP and hydrid parallel ones.
  
 ==== Number_max_Grid (multigrid method only) ==== ==== Number_max_Grid (multigrid method only) ====
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    * Type : character string    * Type : character string
    * "Uniform " : The prolongation operator is of zero order. By considering two successive grid levels, errors on the coarser grid are directly reported on the finner one.This is the default value when "Prolongation_Type" is not explicitly set.    * "Uniform " : The prolongation operator is of zero order. By considering two successive grid levels, errors on the coarser grid are directly reported on the finner one.This is the default value when "Prolongation_Type" is not explicitly set.
-   * "Linear" : The prolongation operator is of first-order. By considering two successive grid levels, errors on the coarsest grid are reported on the finest one by means of a tri-linear interpolation (in 3D).+   * "Linear" : The prolongation operator is of first-order. By considering two successive grid levels, errors on the coarsest grid are reported on the finest one by means of a tri-linear interpolation (in 3D). __BEWARE__ when the numerical simulation contains immersed bodies which can induce small inaccuracies.
 ==== Off_Set_Poisson_Source_term ==== ==== Off_Set_Poisson_Source_term ====
    * Type : Boolean value. __** Not for the release SUNFLUIDH_EDU**__.    * Type : Boolean value. __** Not for the release SUNFLUIDH_EDU**__.
    * The source term is shifted from its averaged value such as its integral value over the domain is zero. This could facilitate the convergence in some particuliar cases. this option must be used with caution. For expert users only.    * The source term is shifted from its averaged value such as its integral value over the domain is zero. This could facilitate the convergence in some particuliar cases. this option must be used with caution. For expert users only.
      
sunfluidh/homedata_poissonsolver_namelist.1613033978.txt.gz · Dernière modification : 2021/02/11 09:59 de yann

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