A Cartesian Mesh Method For Turbulent Flow Simulation

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-08-C-0349
Agency Tracking Number: N08A-008-0204
Amount: $69,987.00
Phase: Phase I
Program: STTR
Awards Year: 2008
Solicitation Year: 2008
Solicitation Topic Code: N08-T008
Solicitation Number: 2008.A
Small Business Information
3409 N. 42nd Pl., Phoenix, AZ, 85018
DUNS: 781820258
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: Y
Principal Investigator
 Lei Tang
 President
 (480) 518-0981
 tanglei@d-p-llc.com
Business Contact
 Lei Tang
Title: President
Phone: (480) 518-0981
Email: tanglei@d-p-llc.com
Research Institution
 NORTH CAROLINA STATE UNIV.
 Hong Luo
 Campus Box 7910/3211 Broughton
Hall
Raleigh, NC, 27695 7910
 (919) 515-2365
 Nonprofit college or university
Abstract
This STTR Phase I project proposes to develop a Cartesian mesh solver for high Reynolds number turbulent flow simulations. Due to its ease of grid generation, simplicity of flow solver, lower computational storage requirement, significantly less operational count per cell, and also due to rapid growth of computer power, the Cartesian mesh approach gets revitalized recently with grid adaptation. These reinvented Cartesian mesh methods use body surfaces to perform cell cutting to preserve the geometric fidelity. With a robust cell-cutting algorithm, the grid generation process can be completely automated. Coupled with a tree-based data structure and solution-based grid adaptation, these methods have made great success for inviscid flow simulations. On the other hand, the extension of the Cartesian mesh approach to viscous flows meets tremendous technical challenges. This is because a very fine mesh is usually required near the body surface, leading to largely varying cell sizes associated with the mesh refinement and the small cut cells associated with the body surface. This STTR effort proposes to use subgrid near the body surfaces to alleviate those issues.

* Information listed above is at the time of submission. *

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