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EP-706 ANSYS FLUENT Venturi Simulation Procedure

Wikis > EP-706 ANSYS FLUENT Venturi Simulation Procedure

3. Meshing

  • DCLK the Meshing cell to open up ANSYS Meshing
  • Units > Metric (mm, kg, N, s, mV, mA)
  • RCLK on Mesh in the Outline tree > Preview > Surface Mesh
    • Preview the surface mesh before generating the whole mesh when altering settings. A bad orthogonal quality in the surface mesh will end up bad as a whole mesh.
  • Click on Mesh in the Outline tree
Defaults Physics Preference CFD
Solver Preference Fluent
Sizing Use Advanced Sizing Function On: Proximity and Curvature
Relevance Center Fine
Span Angle Center Fine
Curvature Normal Angle 10°

(should be adjusted depending on geometry)

Patch Conforming Options Triangle Surface Mesher Advancing Front
Statistics Mesh Metric Orthogonal Quality

Use this to assess if the mesh is at an acceptable quality. You want your Min to be above than .40 for 2D surface mesh and above .05 for 3D.

  • Click on 702-08and create a section plane along the YZ axis to better view the slanted hole.706-12
  • Creating Named Selections
    • Select the face of the cylinder
      • RCLK on the graphics window > Create Named Selections
      • Name it “wall-hole”
  • Do the same for other faces as shown (this is taken from an example with a sphere as the hole to better view the surfaces):706-13706-14
  • Select all other faces that have not been named and name them “openings”
  • Select the whole body (not a face) and name it “air-volume”
  • RCLK on Mesh > Insert > Sizing
    • Select the whole body for Scope.706-15

706-unsequenced

  • RCLK on Mesh > Generate Mesh
  • Click on 706-unsequenced2 706-16

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