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Advanced Turbulence Models for High Mach Number Wall-Bounded Flows

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: N/A
Agency Tracking Number: 25992
Amount: $375,000.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Solicitation Year: N/A
Award Year: 1995
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
P.o. Box 1403
Princeton, NJ 08542
United States
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Dr. William Flannery
 (609) 683-1515
Business Contact
Phone: () -
Research Institution

Computational Fluid Dynamics (CFD) is playing a crucial role in the development of the next generation of advanced aerodynamic vehicles, such as the National Aero-Space Plane (NASP). CFD tools are critical to analyze the high Mach number flows typical of these advanced flight vehicles because of limitations on experimental facilities under these extreme flight conditions. However, the validity of CFD codes is limited by their ability to accurately model the complex turbulence processes of high speed flows. Our recent innovations in the development of turbulence transport models based on renormalization group (RNG) methods promise to render many of the most difficult engineering problems of the NASP tractable. Here, we propose to extend and then apply these models to high Mach number wall-bounded compressible flows in which previous modeling efforts have failed. We shall use our HERCULES unstructured grid code as the initial platform for these studies. To expedite access to the new technology for Wright-Patterson personnel, as well as to provide critical feedback to CHI for the commercialization phase, we also propose to implement the new turbulence models in appropriate Air Force software. This work will yield a practical engineering analysis tool for the NASP project.

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

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