Overview
Meshes for 2D Analyses
Meshing Methods for Shells and Surface Bodies
-Automatic Method (Quadrilateral Dominant)
-All Triangles
-Uniform Quad/Tri
-Uniform Quad
Surface Meshing Mesh Controls
Surface Meshing and Inflation
Workshop 9.1 Meshing a Surface Body for a 2D Fluent Analysis
Meshes for 2D Analyses
-Both Fluent and the Mechanical Products in the ANSYS Portfolio accept 2D (Surface) Meshes for 2D Analyses
-Surface meshes or shell meshes are created for Surface Bodies created in DesignModeler or other CAD package
-CFX does not accept Surface Meshes as it is inherently a 3D Code. To do a 2D analysis in CFX, create a volume mesh (using Sweep) that is 1 element thick in the symmmetry direction for a
.Thin Block for Planar 2D
.Thin Wedge (< 5°) for Axisymmetric 2D
-The Surface Meshing methods discussed in this lecture are therefore appropriate for Fluent CFD or ANSYS Mechanical simulations
Methods for Surface Meshing
Meshing Methods for Surface Bodies
-Automatic Method (Quad Dominant)
-All Triangles
-Uniform Quad/Tri
-Uniform Quad
Surface Meshing Mesh Controls
The following mesh controls will likely be
most useful for Surface Meshing
Edge Sizings
-Use Bias Factors and Hard Divisions as necessary
Mapped Face Meshing
-To try to enforce a structured rather than a paved mesh
-Note that sides, corners, and ends can be specified as Advanced options
Mapped Face Mesh Controls
Support for side/corner controls to define strategy for sub-mapping
Surface Meshing and Inflation
-Inflation can be defined for a Surface Meshing method
-It is scoped to the surface and defined for the edges as for a swept mesh
2-D Inflation
2-D inflation controls
-2-D planar models (Qmorph)
-2-D inflation for Sweep
Workshop 8.1
Meshing a Surface Body for a 2D Fluent Analysis
Goals
This workshop will take you through the process of generating a mesh for a 2-D mixing elbow. The mixing elbow configuration used here is a 2-D representation of piping systems often encountered in power plants. The flow and temperature field in the neighborhood of mixing region is of interest to the CFD analyst.
Goals:
-Import the 2D geometry created in DesignModeler to ANSYS Meshing.
-Create a 2-D mesh on the surface body.
Importing Geometry
1.Copy the mixingelbow.agdb file from the Tutorial Files folder to your working directory
2.Start Workbench and double-click the Mesh entry in the Component Systems panel
3.Right-click on Geometry in the Mesh entry in the Project Schematic and select Import Geometry/Browse
4.Browse to the block and mixingelbow.agdb file you copied and click Open. Note that the Geometry entry in the Project Schematic now has a green check mark.
No comments:
Post a Comment