# Geometry and Grid Generation

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# Code(Credit) : CUTM1528(0+2+2)

## Course Objectives

• To introduce the concepts of grid generation required for Computational Fluid Dynamics applications providing hands-on experience using Simulia.

## Learning Outcomes

• Evaluate the requirements of grid generation for Computational Fluid Dynamics applications.
• Understand the construction techniques of structured and unstructured grids using Simulia.
• Assess the control and efficiency of grid generation procedures.

## Course Syllabus

1. Introduction to 2D & 3D Geometrical shapes used for CFD
• Geometrical shapes for Internal Flows
• 2D Geometry shapes (Circle/Square/Rectangle/Triangle)
• 3D Geometry shapes (Hollow Cylinder/Duct)
• Geometrical shapes for External Flows
• 2D Geometry shapes (Circle/Square/Rectangle/Triangle/Aerofoil)
• 3D Geometry shapes (Wedge/Sphere/Solid Cylinder/Cone)
• Importing Geometry, Geometry Clean up, Finding & Fixing Errors in Geometry
1. Grid Generation in CFD using Simulia
• Mapped Meshing
• Sweeping Meshing
• Un-structured Grid/Mesh Generation(2D-Triangular/3D-Tetrahedral)
• Octree Meshing
• Delaunay Meshing
1. Creation of Density box, Prism mesh Generation, Mesh Quality checks, Mesh export

Practice: 2Hrs.

Project: 2Hrs. expect 8 and 9

Projects 8 & 9: 4 Hrs.

Practice 1. Generation of 2D mapped meshing for Rectangle.

Project 1.  Grid generation for pipe at Re=500.

Practice 2. Generation of 2D mapped meshing for Aerofoil.

Project 2. 3D coarse/ medium/ fine unstructured Octree Tetrahedron mesh for Aerofoil.

Practice 3. Generation of 2D Mapped meshing for Converging and Diverging Nozzle.

Project 3. Grid generation for compressible flow nozzle.

Practice 4. Generation of 3D mapped meshing for Cylinder.

Project 4. Grid generation for circular cylinder at Re=107.

Practice 5. Generation of 3D mapped meshing for Cuboid.

Project 5. Grid generation for rectangular Duct.

Practice 6. Generation of 3D Sweep mesh for U-Bend Pipe.

Project 6. Grid generation for cross flow heat exchanger.

Practice 7. Generation of 3D Mesh for Ahmed Body.

Practice 8. Generation of 3D mesh for 3D Cone.

Practice 9. Generation of 3D coarse/ medium/ fine sweep mesh for Pipe.

Practice 10. Generation of grid for Turbine Blade.

Practice 11. Generation of 3D mesh for Dimple Ball.

Practice 12. Generation of 2D Mapped meshing for a Wedge.

Project 7. Grid generation for flat plate at Re=1000000

Project 8. Generation of grid for Narrowing pipe(4Hrs.)

Project 9. Grid generation for turbulent flow turbine blade(4Hrs.)

Project 10. Grid generation for cylinder with rectangular domain varying height and radius.

Text Book:

1. HandBook of Grid Generation, by J.F.Thompson, B.K.Soni & N.P.Weatherill, CRC Press , New York.

## Sessions 1 & 2

Practice 1. Generation of 2D mapped meshing for Rectangle.

https://youtu.be/UiFxf5DGMDE

## Sessions 3 & 4

Project 1(Assignment).  Grid generation for pipe at Re=500.

## Sessions 5 & 6

Practice 2. Generation of 2D mapped meshing for Aerofoil.

https://youtu.be/LAIB7qK-9pE

## Sessions 7 & 8

Project 2(Assignment). 3D coarse/ medium/ fine unstructured Octree Tetrahedron mesh for Aerofoil.

## Sessions 9 & 10

Practice 3. Generation of 2D Mapped meshing for Converging and Diverging Nozzle.

https://youtu.be/1LsH4t-hkgU

## Sessions 11 & 12

Project 3(Assignment). Grid generation for compressible flow nozzle.

## Sessions 13 & 14

Practice 4. Generation of 3D mapped meshing for Cylinder.

https://youtu.be/o0dPSAHixCI

## Sessions 15 & 16

Project 4(Assignment). Grid generation for circular cylinder at Re=107.

## Sessions 17 & 18

Practice 5. Generation of 3D mapped meshing for Cuboid.

https://youtu.be/vxVBvANHuB0

## Sessions 19 & 20

Project 5(Assignment). Grid generation for rectangular Duct.

## Sessions 21 & 22

Practice 6. Generation of 3D Sweep mesh for U-Bend Pipe.

https://youtu.be/OV_VuZvUiiM

## Sessions 23 & 24

Project 6(Assignment). Grid generation for cross flow heat exchanger.

## Sessions 25 & 26

Practice 7. Generation of 3D Mesh for Ahmed Body.

https://youtu.be/HyxR5sJk-gU

## Sessions 27 & 28

Practice 8. Generation of 3D mesh for 3D Cone.

https://youtu.be/XjxwOHIx03M

## Sessions 29 & 30

Practice 9. Generation of 3D coarse/ medium/ fine sweep mesh for Pipe.

https://youtu.be/1woKtFjN-bE

## Sessions 31 & 32

Practice 10. Generation of grid for Turbine Blade.

https://youtu.be/k943AOVKL3Q

## Sessions 33 & 34

Practice 11. Generation of 3D mesh for Dimple Ball.

https://youtu.be/4bVXbNZ22-U

## Sessions 35 & 36

Practice 12. Generation of 2D Mapped meshing for a Wedge.

https://youtu.be/hVsXTdG9nts

## Sessions 37 & 38

Project 7(Assignment). Grid generation for flat plate at Re=1000000.

## Sessions 39-42

Project 8(Assignment). Generation of grid for Narrowing pipe.

## Sessions 43-46

Project 9(Assignment). Grid generation for turbulent flow turbine blade.

## Sessions 47 & 48

Project 10(Assignment). Grid generation for cylinder with rectangular domain varying height and radius.