A 3-D NUMERICAL MODEL FOR PREDICTING MESOSCALE WINDFIELDS OVER VANDENBERG AIR FORCE BASE

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: N/A
Agency Tracking Number: 9376
Amount: $49,997.00
Phase: Phase I
Program: SBIR
Awards Year: 1989
Solitcitation Year: N/A
Solitcitation Topic Code: N/A
Solitcitation Number: N/A
Small Business Information
Advanced Projects Research Inc
12524 Westmont Dr, Moorpark, CA, 93021
Duns: N/A
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Dr Darrell W Pepper
 (805) 581-0593
Business Contact
Phone: () -
Research Institution
N/A
Abstract
A 3-D NUMERICAL MODEL FOR PREDICTING MESOSCALE WINDFIELDS OVER VANDENBERG AFB IS BEING DEVELOPED. THE MODEL UTILIZES AN OBJECTIVE ANALYSIS TECHNIQUE AND AVAILABLE METEOROLOGICAL DATA TO GENERATE A FIRST GUESS, MASS CONSISTENT WINDFIELD. A HYBRID FINITE ELEMENT METHOD IS THEN USED TO SOLVE THE PRIMITIVE EQUATIONS OF MOTION FOR PREDICTIVE ANALYSIS. A 3-D MESH GENERATOR IS INCLUDED WITH THE COMPUTER CODE FOR GRID REFINEMENT AND ADJUSTMENT. VANDENBURG AFB IS LOCATED ON THE CENTRAL CALIFORNIA COAST. THE TERRAIN CONSISTS OF FLATLANDS, VALLEYS, CANYONS, RIDGELINES, AND MOUNTAINS WHICH RISE TO ELEVATIONS OVER 600 M. WINDFLOW IS INFLUENCED BY SYNOPTIC, REGIONAL, AND LOCAL METEOROLOGICAL EFFECTS ASSOCIATED WITH THE TERRAIN. STRONG INVERSIONS ARE COMMON OVER THE AERA. THE NUMERICAL MODEL IS CAPABLE OF ACCURATELY CALCULATING FLOW OVER COMPLEX TERRAIN FEATURES, AND CAN BE USED TO PREDICT DISPERSION OF CONCENTRATIONS WITHIN THE MIXING LAYER. A SMALL SCALE VERSION OF THE PROGRAM (UP TO 5000 NODES - 25,000 DEGREES OF FREEDOM) CAN BE RUN ON AN ENHANCED PERSONAL COMPUTER.

* information listed above is at the time of submission.

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