ICEM-Intro_13.0_WS5.2a_Wingbody_Prism.pdfVIP

Customer Training Material W k h 5 2or s op . Wingbody Introduction to ANSYS ICEM CFD WS5.2-1 ANSYS, Inc. Proprietary ? 2010 ANSYS, Inc. All rights reserved. Release 13.0 December 2010 Introduction to ANSYS ICEM CFD Customer Training Material“Bottom up” Volume Meshing ? First, extrude prism mesh from standalone surface mesh – “Bottom up” approach – Could also extrude into existing volume mesh (traditional method), “top down” approach ? Generate rest of grid – Farfield volume – Delauney ? Use density region – Define mesh size for refinement – In area where no geometry exists ? Create Hexa core – For majority hex fill in far field Ch Fil O P j t? oose e pen ro ec – To load previously saved surface mesh and geometry – Browse to Wingbody working di t If previous project was not completed, load the t F6 l t ti d th h WS5.2-2 ANSYS, Inc. Proprietary ? 2010 ANSYS, Inc. All rights reserved. Release 13.0 December 2010 rec ory – Load previous project geome ry _comp e e. n an e mes f6_surf.uns Introduction to ANSYS ICEM CFD Customer Training MaterialGlobal Prism Parameters ? Set global prism parameters – Mesh Global Mesh Setup Prism Meshing Parameters – Set Growth law to exponential (default) – Initial height = 0 ? Height determined automatically so that last prism is of similar volume to adjacent tetra ? Proportional to size of triangle – Height ratio = 1.2 – Number of layers = 5 – Min prism quality = 0.000001 – New volume part = LIVE ? We will create prism from a surface- only mesh Th l t i h WS5.2-3 ANSYS, Inc. Proprietary ? 2010 ANSYS, Inc. All rights reserved. Release 13.0 December 2010 ? e vo ume par s necessary w en extruding from surface mesh Introduction to ANSYS ICEM CFD Customer Training MaterialPick Parts for Prism Mesh ? Select Parts and Compute prism mesh – Mesh Compute Mesh Prism Mesh P S l t P t f P i L– ress e ec ar s or r sm ayer ? FAIRING, FUSELAGE, WING – Apply, then Dismiss C– ompute Height, height ratio, and num layers were