THE OBJECTIVE OF THIS EFFORT IS TO ASSESS THE ACCURACY OF A RECENTLY DEVELOPED CODE, TURF2, TO PREDICT TRANSIENT EFFECTS CAUSED BY A SHOCK WAVE MOVING OVER A SAND BED, AND DIFFRACTING OVER AN OBSTACLE ON THE SURFACE AND IN A HOT LAYER OF GAS.

Award Information
Agency:
Department of Defense
Branch
Defense Threat Reduction Agency
Amount:
$48,758.00
Award Year:
1985
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Agency Tracking Number:
2442
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Applied & Theoretical Mechanic
4501 Sequoyah Rd, Oakland, CA, 94605
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
JOELLE CHAMPNEY
(415) 635-1427
Business Contact:
() -
Research Institution:
n/a
Abstract
THE OBJECTIVE OF THIS EFFORT IS TO ASSESS THE ACCURACY OF A RECENTLY DEVELOPED CODE, TURF2, TO PREDICT TRANSIENT EFFECTS CAUSED BY A SHOCK WAVE MOVING OVER A SAND BED, AND DIFFRACTING OVER AN OBSTACLE ON THE SURFACE AND IN A HOT LAYER OF GAS. DURING 1984, TURF2 TWO-PHASE FLOW BOUNDARY CONDITIONS AND TWO-PHASE FLOW TURBULENCE MODELING WERE IMPLEMENTED AND TESTED FOR STEADY FLOWS. RESULTS COMPARED WELL WITH EXPERIMENTS FOR FLOWS RESULTING FROM A WIND ABOVE A SAND BED AND FROM A SHOCK WAVE SWEEPING A SAND BED. IN THE PROPOSED EFFORT, A SERIES OF UNSTEADY TURBULENT TWO-PHASE FLOWS WILL BE SIMULATED AND COMPARED WITH EXPERIMENTAL DATA: (1) FOR A SHOCK WAVE SWEEPING A SAND BED, (2)FOR A SHOCK WAVE SWEEPING A SAND BED AND DIFFRACTING OVER AN OBSTACLE,(3) FOR A SHOCK WAVE SWEEPING A SAND BED INCLUDING A HOT LAYER OF GAS AND DIFFRACTING OVER AN OBSTACLE.

* information listed above is at the time of submission.

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