Set Up and Run a CFD simulation

Use the default settings to run a CFD simulation for the selected parts.

1. On the Fluids ribbon, click the Run CFD Simulation button in the Analyze CFD tool group.
   
   
2. Let the analysis run to completion.

Run a CFD simulation with custom settings.

1. On the Fluids ribbon, click the Custom CFD Run tool in the Run CFD Analysis tool group.
   
   
2. Customize the settings:

   Table 1. Simulation tab

   Option	Description
   Name	Enter the name of the simulation.
   Low-High Resolution	Drag the slider to the left for a fast, low resolution simulation. Drag the slider to the right to increase the resolution.
   Voxel Size	Define the size of the voxel mesh used for the calculation.
   Estimated No. of Voxels	The approximate number of voxels in the mesh used for the calculation.
   Max. Facet Size	Enter the facet size of the surface mesh used to visualize the results.
   Curve Chord Angle	Define how closely the curve is approximated with straight sections in the mesh. For a finer mesh, decrease this value. For a coarser mesh, increase this value.

   Table 2. Advanced tab

   Option	Description
   Termination Criteria	Stop the simulation when the selected criteria are met. Physics and Equations: Stop the simulation when both the Physics and Equations criteria are met. Physics or Equations: Stop the simulation when either the Physics or Equations criteria are met, whichever occurs first. Physics: Stop the simulation when the Physics convergence criteria are met. Equations: Stop the simulation when the Equations criteria are met.
   Convergence Speed	Control the time step size used to pursue a steady solution. Larger values may lead to instability for some simulations.
   Max. Time Steps	Define the maximum number of time steps allowed in the simulation.
   Flow Type	Select a flow type. Turbulent: Turbulent flow is characterized by chaotic particle movement. Most engineering flows of interest are turbulent. Laminar: Laminar flow occurs when a fluid flows in parallel layers. This only appears at very low Reynolds numbers.

   Note: To restore the default settings, click the Reset button and select Defaults.
3. Click the Run button.

查看当前运行的状态，以及尚未查看的当前模型的运行情况。要查看以往的运行，您需要查看运行记录。

1. 将鼠标悬停在分析图标上，然后选择运行状态工具。
   
   
   会显示“运行状态”窗口。
   
   
2. 当运行结束后，查看其状态。

   状态	描述	注意
   	运行成功结束。	“分析”图标上的绿色旗帜也表明运行成功结束。点击绿色旗帜显示结果。
   	运行未完成。	如果运行分析，则运行未完成。部分（并非所有）结果类型可供使用。此时应该运行一个新分析以生成完整的结果。 如果运行优化，则运行已结束但出现警告或违规提示。更多信息，请双击“运行状态”对话框中的运行名称，然后点击“形状浏览器”中的设计违规按钮。
   	运行失败，没有产生有意义的结果。	“分析”图标上的红色旗帜也表明运行失败。

3. 查看一个或更多运行。
   • 要查看运行，双击所在行。
   • 要查看多个运行，按住 Ctrl 或 Shift 键的同时点击行，然后点击现在查看按钮。
     注： 如果多个运行都与同一个零件相关联，有关该零件的最新的运行结果将会显示在模型视窗中。

查看、排序、打开和删除当前和之前模型的历史运行。

1. 将鼠标悬停在分析或分析 CFD 图标上，然后选择运行状态工具。
   
   
   会显示运行记录。
   
   
2. 查看运行状态。

   状态	描述	注意
   	运行成功结束。
   	运行未完成。	如果运行分析，则运行未完成。部分（并非所有）结果类型可供使用。此时应该运行一个新分析以生成完整的结果。 如果运行优化，则运行已结束但出现警告或违规提示。更多信息，请双击“运行状态”对话框中的运行名称，然后点击“形状浏览器”中的设计违规按钮。
   	运行失败，没有产生有意义的结果。

3. 要查看运行，双击所在行。