3200万网格算例测试（ANSYS Fluent版本）
-
-
测试设备NVIDIA DGX-1 8xV100 32GB
CPU:8/40 2x Xeon E5 2698 v4
GPU:Nvidia Tesla V100 x8
超线程：关闭
RAM:500GB
系统：Ubuntu 20.04 LTS
Fluent版本：Fluent 2023R1 Linux64
打开Native GPU 模式
GPU数量：8
迭代步数：40Performance Timer for 40 iterations on 8 compute nodes Average wall-clock time per iteration: 0.748 sec Global reductions per iteration: 0 ops Global reductions time per iteration: 0.000 sec (0.0%) Message count per iteration: 0 messages Data transfer per iteration: 0.000 MB LE solves per iteration: 0 solves LE wall-clock time per iteration: 0.000 sec (0.0%) LE global solves per iteration: 0 solves LE global wall-clock time per iteration: 0.000 sec (0.0%) LE global matrix maximum size: 0 AMG cycles per iteration: 0.000 cycles Relaxation sweeps per iteration: 0 sweeps Relaxation exchanges per iteration: 0 exchanges LE early protections (stall) per iteration: 0.000 times LE early protections (divergence) per iteration: 0.000 times Total SVARS touched: 366 Total wall-clock time: 29.934 secSimulation wall-clock time for 40 iterations 56.57831 sec
-
@李东岳 根据用户手册，GPU求解器对湍流模型、边界条件等有较多的限制
34.9.1. ModelsThe following models are supported by the Fluent GPU Solver: Thermal energy and CHT. See Modeling Thermal Energy. Species transport without reactions. See Species Transport Without Reactions. The GPU solver supports the following turbulence models: Laminar Standard and realizable k-epsilon k-omega GEKO and k-omega SST Large Eddy Simulation (LES) For the LES turbulence model, the following sub-grid scale models are supported: Smagorinsky-Lilly WALE Stress-Blended Eddy Simulation (SBES)34.9.2. Material Properties
Material properties defined with the following settings are supported by the Fluent GPU Solver: constant ideal-gas incompressible-ideal-gas boussinesq polynomial piecewise-linear piecewise-polynomial sutherland viscosity law34.9.3. Solver Settings
This section decribes the general solver settings and solution methods that are supported by the Fluent GPU Solver. The following general solver settings are supported: Pressure-Based solver Absolute velocity formulation Steady and Transient flows For instructions on specifying the solver settings above see General Task Page. The following solution methods are supported: SIMPLE and SIMPLEC pressure-velocity coupling schemes. See Pressure-Based Solver Settings for details. First-order and second-order spatial discretization schemes. See Choosing the Spatial Discretization Scheme for details. The Bounded Central Differencing spatial discretization scheme is supported and becomes available when Large Eddy Simulation (LES), Stress-Blended Eddy Simulation (SBES), or URANS turbulence models are enabled. For more information see Modeling Turbulence. First order and second order implicit transient formulations are supported for incompressible transient cases.34.9.4. Cell Zone and Boundary Conditions
This section outlines the cell zone and boundary conditions supported by the Fluent GPU Solver. The following boundary condition settings are supported: Wall Stationary Wall and Moving Wall, including Rotational wall motion. See Wall Boundary Conditions. Thermal conditions. See Thermal Boundary Conditions at Walls. Translational Periodic boundary condition with or without a non-conformal mesh interface. See Periodic Boundary Conditions for details. Inlet Velocity-inlet (incompressible). See Defining the Velocity. Pressure-inlet. See Pressure Inlet Boundary Conditions. Mass-flow-inlet (incompressible). See Mass-Flow Inlet Boundary Conditions. Outlet Pressure-outlet. See Pressure Outlet Boundary Conditions Mass-flow-outlet (incompressible). See Mass-Flow Outlet Boundary Conditions Symmetry. See Symmetry Boundary Conditions. Porous Jump. See Porous Jump Boundary Conditions. Intake Fan. See Intake Fan Boundary Conditions. Outlet Vent. See Outlet Vent Boundary Conditions. For the supported boundary conditions listed above, boundary condition settings can be defined as constant or with a profile, as outlined in Profiles. The Fluent GPU Solver supports fluid cell zones with the following settings: Constant Source Terms. See Defining Mass, Momentum, Energy, and Other Sources. Porous Zone. See Porous Media Conditions. -
