PROPOSAL TO DEVELOP A NUMERICAL SIMULATION FOR THE INLET BUZZ PROBLEM BY SOLUTION OF THE TIME DEPENDENT NAVIER-STOKESEQUATIONS

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$205,000.00
Award Year:
1987
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Agency Tracking Number:
2838
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Scientific Research Associates
Po Box 498, Glastonbury, CT, 06033
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Richard C Buggeln
Principal Investigator
() -
Business Contact:
() -
Research Institution:
n/a
Abstract
THE PROPOSED EFFORT WOULD DEVELOP AN APPROACH FOR THE SIMULATION OF THE EXTERNAL COMPRESSION INLET FLOW FIELD VIA THE THREE-DIMENSIONAL, TIME-DEPENDENT NAVIER-STOKES EQUATIONS. WITH THIS INNOVATIVE APPROACH TO THE PROBLEM THEENTIRE FLOW FIELD WOULD BE SIMULATED VIA A SINGLE SET OF GOVERNING EQUATIONS WHICH WOULD INCLUDE DETAILS OF THE WALL VISCOUS REGION AND INCLUDE BOTH STEADY STATE AND TIME DEPENDENT SHOCK SAVE - BOUNDARY LAYER INTERACTIONS. INCLUSION OF A TIME-DEPENDENT CAPABILITY ALLOWS APPLICATION TO THE INLET BUZZ PROBLEM. THE PROPOSED APPROACH AVOIDS USING DIFFERENT APPROXIMATE EQUATIONS IN DIFFERENT PORTIONS OF THE FLOW FIELD WHICH ARE THEN JOINED THROUGH A SET OF MATCHING CONDITIONS. THEREFORE, THE PROPOSED NAVIER-STOKES SIMULATION WOULD PROVIDE A MORE POWERFUL TOOL THAN CURRENTLYEXISTS FOR THE EXTERNAL COMPRESSION INLET PROBLEM. IN ADDITION, BEING GENERAL, THIS SAME APPROACH COULD BE USED FOR BOTH MIXED AND INTERNAL COMPRESSION INLETS. UNDER PHASEI A GENERAL THREE-DIMENSIONAL CODE WOULD BE MADE APPLICABLE TO THIS PROBLEM AND A DEMONSTRATION TWO-DIMENSIONAL CALCULATION WOULD BE RUN. ASSESSMENT OF THE PROCEDURE'S CAPABILITY WOULD BE MADE VIA A COMPARISION WITH EXISTING DATA.

* information listed above is at the time of submission.

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