Creo Tutorials > Creo Flow Analysis Tutorials > Advanced Tutorials > Creo Flow Analysis Advanced Tutorials > Tutorial 5 - External Air Flow for a Truck > External Air Flow for a Truck: Exercise 3—Preparing the Mesh
  
External Air Flow for a Truck: Exercise 3—Preparing the Mesh
A mesh is a computational grid inside, outside, or both inside and outside any closed geometry defined by a CAD surface.
Generating the Mesh
1. In the Flow Analysis Tree, select Domains.
2. In the Properties panel, Model tab, for
Mesh LocationExterior Volumes
Bounding Box MarginsNonuniform
Maximum Side Sizes2.0, 1.2, 1.5
Minimum Side Sizes0.3, 0, 1.5
Minimum Cell Size0.0005
Refine Zone OptionsBox Zone Refinement
Cell Size0.005
First Corner-9.0, -1.0, -1.5
Diagonal Corner11.0, 4.0, 1.5
Setup OptionsAdvanced Mode
Sub-feature OptionsCombined with Patches
3. Click Generate Mesh to create the mesh for the fluid domain.