USAT: Unified Software for Analysis of Transition

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: F33615-02-C-3212
Agency Tracking Number: 001VA-2970
Amount: $759,742.00
Phase: Phase II
Program: SBIR
Awards Year: 2002
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
High Technology Corp.
28 Research Drive, Hampton, VA, 23666
DUNS: 119712776
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Mujeeb Malik
 Chief Scientist
 (757) 865-0818
 malik@htc-tech.com
Business Contact
 Mujeeb Malik
Title: President
Phone: (757) 865-0818
Email: malik@htc-tech.com
Research Institution
N/A
Abstract
"Laminar-Turbulent transition phenomenon in hypersonic flows remains poorly understood although it has a profound impact on the thermal protection system weight, vehicle drag and air-breathing engine performance. Transition location uncertainties forcedesigners to be conservative by adding weight and reducing thrust. Efficient techniques for prediction and control of boundary-layer transition are needed. The proposed effort deals with the development of a unified software package for advancedtransition analysis and prediction. This transition prediction tool includes the effect of external (free-stream, wall-induced) disturbances on boundary-layer transition which is accomplished by coupling a receptivity module with a disturbance growthmodule. The receptivity module determines the relationship between the imposed disturbances and boundary-layer instability waves, while the disturbance growth module computes the evolution of these instabilities and determines the location of transition.The disturbance growth and the receptivity modules will be incorporated in the unified software package, USAT, in a way that minimizes problem setup time as well as computational time. The software package will be developed for use by aerospace designers."

* information listed above is at the time of submission.

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