APPLICATION OF TWO-PHASE FLOW AND HEAT TRANSFER CORRELATIONS TO ZERO GRAVITY CONDITIONS

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$251,063.00
Award Year:
1985
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Award Id:
1033
Agency Tracking Number:
1033
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
3425 S Bascom Ave, Campbell, CA, 95008
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Davood Abdollahian
(408) 377-4870
Business Contact:
() -
Research Institute:
n/a
Abstract
THE PROPOSED RESEARCH PROGRAM IS FOR DEVELOPMENT OF MODELS FOR TWO-PHASE FRICTION MULTIPLIER, VOID FRACTIN-QUALITY RELATION, AND FORCED CONVECTIVE NUCLEATE BOILING HEAT TRANSER COEFFICIENT UNDER ZERO GRAVITY CONDITIONS. DUE TO HIGH HEAT TRANSFER CO EFFICIENT, A TWO-PHASE GAS-LIQUID MEDIUM IS EXPECTED TO BE USED IN THE FUTURE COOLING SYSTEMS FOR SPACECRAFT EQUIPMENT. DESIGN OF THESE COOLING SYSTEMS REQUIRE A KNOWLEDGE OF TWO-PHASE FLOW AND HAT TRANSFER UNDER REDUCED AND ZERO GRAVITIES. THE OBJECTIVE OF THE PROPOSED PROGRAM IS TO EXTEND THE WELL ESTABLISHED TWO-PHASE FLOW MODELS DEVELOPED AT EARTH GRAVITY TO ZERO GRAVITY CONDITIONS. THIS IS ACHIEVED BY USING THE REDUCED GRAVITY POOL BOILING AND BUBBLE DYNAMIC STUDIES TO ESTABLISH THE EXPECTED VOID DISTRIBUTION IN TWO-PHASE FLOW MODELS IN WHICH THE GRAVITY COMPONENT HAS BEEN NEGLECTED OR CAN BE EASILY SEPARATED WILL BE USED TO FORMULATE THE MODELS FOR THE ABOVE THREE MAJOR ENGINEERING PARAMETERS.

* information listed above is at the time of submission.

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