AN ASSESSMENT OF LASER VELOCIMETER POTENTIAL IN HYPERSONIC FLOWS

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: N/A
Agency Tracking Number: 5165
Amount: $494,000.00
Phase: Phase II
Program: SBIR
Awards Year: 1988
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
P.o. Box 1697, Palo Alto, CA, 94302
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 () -
Business Contact
 DR. F.K. OWENS
Title: INVESTIGATOR
Phone: () -
Research Institution
N/A
Abstract
AT PRESENT, PROGRESS IN COMPUTATIONAL FLUID DYNAMICS OF HIGHSPEED FLOWS IS RESTRICTED BY THE NEED FOR EXPERIMENTAL DATA WHICH CAN BE USED FOR THE DEVELOPMENT OF EMPIRICAL TURBULENCE MODELS AND TO VALIDATE NAVIER-STOKES CODES. ALTHOUGH SOME HOT WIRE DATA HAVE BEEN OBTAINED IN PREVIOUS YEARS, THEY ARE OF QUESTIONABLE RELIABILITY DUE TO THE ASSUMPTIONS WHICH MUST BE MADE TO DETERMINE VELOCITY FLUCTUATION LEVELS FROM THE MEASURED HOT WIRE VARIABLES. HOWEVER, THE ADVENT OF THE LASER VELOCIMETER ALLOWS US TO MEASURE VELOCITY FLUCTUATIONS DIRECTLY, IN A LINEAR, NON-INTRUSIVE MANNER OF PARTICULAR VALUE IS THE CAPABILITY TO MEASURE THE TURBULENT SHEAR STRESSES WHICH IS AN IMPRACTICAL TASK WITH HOT WIRES. HOWEVER, BEFORE COMPLEX AND EXPENSIVE TEST PLANS ARE MADE, AN ASSESSMENT OF THE POTENTIAL FOR LASER VELOCIMETRY IN HYPERSONIC FLOWS MUST BE MADE. THE PURPOSE OF THIS PROPOSAL IS TO MAKE SUCH A DETERMINATION FOR FLOWFIELD MEASUREMENTS IN THE NASA AMES 3.5 FT. HYPERSONIC WIND TUNNEL.

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

Agency Micro-sites

SBA logo
Department of Agriculture logo
Department of Commerce logo
Department of Defense logo
Department of Education logo
Department of Energy logo
Department of Health and Human Services logo
Department of Homeland Security logo
Department of Transportation logo
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government