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ICEM CFD Meshes for Drag Prediction Workshop

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Presentation on theme: "ICEM CFD Meshes for Drag Prediction Workshop"— Presentation transcript:

1 ICEM CFD Meshes for Drag Prediction Workshop
Structured Multiblock Meshes for WB & WBNP configuration Unstructured Tetra + Prism Meshes Three unstructured meshes for each configuration based on size of the mesh Prisms & Pyramids can be readily converted into tetras for solvers that can not handle prism & pyramid elements

2 Files ICEM CFD files, Plot3D files and CGNS files are available CGNS files are written by ICEM CFD CGNS translator using CGNS library version 2.1 Plot3D files are written with Double precision, Formatted, no IBLANK array with ‘Whole’ data layout. Contact for different format of the mesh Wing-body configuration mesh files contains “wb” in the name, Wing-Body-Nacelle-Pylon configuration mesh files contains “wbnp”

3 Wing-Body Hex Mesh C – Topology around the wing
Fine, Medium and Coarse grids are available 4 Levels of Multigrid (level 0, 1, 2 & 3) – Coarse mesh has only 3 levels (level 0, 1 & 2) of Multigrid Viscous Grid with Near wall Spacing = 0.001

4 Wing-Body Hex Mesh C – Topology for wing
Fine Mesh Medium Mesh 10 Million Hexas 5.5 Million Hexas Coarse Mesh 3.3 Million Hexas

5 Wing-Body-Nacelle-Pylon Hex Mesh
C – Topology for Wing-Nacelle-Pylon region. 4 Levels of Multigrid (level 0, 1, 2 & 3) for fine and medium meshes and 3 levels of multigrid (level 0, 1 & 2) for coarse configuration Minimum number of blocks Viscous Grid With Near Wall Spacing = 0.001

6 Wing-Body-Nacelle-Pylon C – Topology for Nacelle & Wing
Fine Mesh 13.7 Million Nodes (13.5M Hexas) Coarse Mesh 4.6 Million Nodes (4.5M Hexas) Medium Mesh 8.5 Million Nodes (8.3M Hexas)

7 Wing-Body Tetra Prism Mesh - Coarse
Total Number of Tetras – 1.2 million Prisms – 0.8 million Nodes – .62 million 10 Layers of Prisms First prism layer height from surface = 0.05mm File name aiaa_wb_prism_2.0m*

8 Wing-Body Tetra Prism Mesh - Medium
Total Number of Tetras – 1.5 million Prisms – 3.8 million Nodes – 2.2 million 35 Layers of Prisms First prism layer height from surface = 0.001mm File name aiaa_wb_prism_5.2m*

9 Wing-Body Tetra Prism Mesh - Fine
Total Number of Tetras – 4.2 million Prisms – 9.75 million Nodes – 5.7 million 40 Layers of Prisms First prism layer height from surface = 0.001mm File name aiaa_wb_14.0m*

10 Wing-Body Tetra Prism Mesh With Elongated Triangles at Leading and Trailing Edges
Total Number of Tetras –million Prisms –million Nodes –million 35 Layers of Prisms First prism layer height from surface = 0.001mm File name aiaa_wbe*

11 Wing-Body-Nacelle-Pylon Tetra Prism Mesh - coarse
Total Number of Tetras – million Prisms – 1.7 million Nodes – 1.1 million 10 Layers of Prisms First prism layer height from surface = 0.05mm File name aiaa_wbnp_3.0m*

12 Wing-Body-Nacelle-Pylon Tetra Prism Mesh - Medium
Total Number of Tetras – 0.8 million Prisms – 4.25 million Nodes – 2.3 million 35 Layers of Prisms First prism layer height from surface = mm File name aiaa_wbnp_5.om*

13 Wing-Body-Nacelle-Pylon Tetra Prism Mesh - Fine
Total Number of Tetras – 3.0 million Prisms – million Nodes – 5.9 million 39 Layers of Prisms First prism layer height from surface = mm File name aiaa_wbnp_14.0m*

14 Wing-Body-Nacelle-Pylon Tetra Prism Mesh With Elongated Triangles at Leading and Trailing Edges
Total Number of Tetras – 2.5 million Prisms – 5.5 million Nodes – 3 million 39 Layers of Prisms First prism layer height from surface = mm File name aiaa_wbnpe*


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