EFFECTS OF STRUCTURES ON TOXIC VAPOR DISPERSION

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: N/A
Agency Tracking Number: 12946
Amount: $49,918.00
Phase: Phase I
Program: SBIR
Awards Year: 1990
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Sigma Research Corp
234 Littleton Rd - Ste 2e, Westford, MA, 01886
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Steven R Hanna
 (508) 692-0330
Business Contact
Phone: () -
Research Institution
N/A
Abstract
CURRENTLY AVAILABLE TOXIC VAPOR DISPERSION MODELS AT AIR FORCE FACILITIES DO NOT ADEQUATELY INCLUDE THE EFFECTS OF STRUCTURES ON THE RATE OF DISPERSION. SOME RELEVANT MODELS AND DATA SETS ARE AVAILABLE IN THE LITERATURE AS A RESULT OF RESEARCH BY OTHER ORGANIZATIONS. THE LITERATURE WILL BE REVIEWED AND AN ASSESSMENT MADE OF THE FEASIBILITY OF PRODUCING A VIABLE MODELING SYSTEM AND WHETHER THE EFFECTS OF STRUCTURES ARE LIKELY TO BE SIGNIFICANT RELATIVE TO OVERALL DISPERSION MODEL UNCERTAINTY. THE MICROCOMPUTERBASED MODELING SYSTEM WILL ACCOUNT FOR AERODYNAMIC EFFECTS AROUND ONE BUILDING OR GROUPS OF STRUCTURES, INCLUDING DOWNWASH AND VAPOR TRAPPING. BOTH NEUTRALLY-BUOYANT AND DENSE GAS CASES WILL BE CONSIDERED, AND THE MODEL WILL BE CONSTRUCTURED SUCH THAT IT IS CAPABLE OF A SMOOTH TRANSITION TO OTHER DISPERSION MODELS AT DOWNWIND DISTANCES WHERE THE EFFECTS OF THE STRUCTURES BECOME INSIGNIFICANT.

* information listed above is at the time of submission.

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