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

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 senthan@icemcfd.com 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”

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

Wing-Body Hex Mesh C – Topology for wing

• 10 Million Hexas

Fine Mesh Medium Mesh

• 5.5 Million Hexas

• 3.3 Million Hexas

Coarse Mesh

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

Wing-Body-Nacelle-Pylon C – Topology for Nacelle & Wing

• 13.7 Million Nodes (13.5M Hexas)

• 4.6 Million Nodes (4.5M Hexas)

Fine Mesh

• 8.5 Million Nodes (8.3M Hexas)

Coarse Mesh

Medium Mesh

Wing-Body Tetra Prism Mesh - Coarse

• Total Number of Tetras – 1.2 million

Prisms – 0.8 millionNodes – .62 million

• 10 Layers of Prisms• First prism layer height

from surface = 0.05mm

• File name aiaa_wb_prism_2.0m*

Wing-Body Tetra Prism Mesh - Medium

• Total Number of Tetras – 1.5 million

Prisms – 3.8 millionNodes – 2.2 million

• 35 Layers of Prisms• First prism layer height

from surface = 0.001mm• File name

aiaa_wb_prism_5.2m*

Wing-Body Tetra Prism Mesh - Fine

• Total Number of Tetras – 4.2 million

Prisms – 9.75 millionNodes – 5.7 million

• 40 Layers of Prisms• First prism layer height

from surface = 0.001mm• File name aiaa_wb_14.0m*

Wing-Body Tetra Prism Mesh With Elongated Triangles at Leading and Trailing Edges

• Total Number of Tetras –million

Prisms –millionNodes –million

• 35 Layers of Prisms• First prism layer height

from surface = 0.001mm

• File name aiaa_wbe*

Wing-Body-Nacelle-Pylon Tetra Prism Mesh - coarse

• Total Number of Tetras – 1.25

millionPrisms – 1.7

millionNodes – 1.1

million• 10 Layers of Prisms• First prism layer height

from surface = 0.05mm• File name

aiaa_wbnp_3.0m*

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 = 0.001 mm• File name

aiaa_wbnp_5.om*

Wing-Body-Nacelle-Pylon Tetra Prism Mesh - Fine

• Total Number of Tetras – 3.0

millionPrisms – 10.6

millionNodes – 5.9 million

• 39 Layers of Prisms• First prism layer height

from surface = 0.001 mm• File name

aiaa_wbnp_14.0m*

Wing-Body-Nacelle-Pylon Tetra Prism Mesh With Elongated Triangles at Leading and Trailing Edges• Total Number of Tetras – 2.5

millionPrisms – 5.5

millionNodes – 3 million

• 39 Layers of Prisms• First prism layer

height from surface = 0.001 mm

• File name aiaa_wbnpe*