USA flag logo/image

An Official Website of the United States Government

TRANSPORT PROPERTIES IN NON-EQUILIBRIUM AIR MIXTURES

Award Information

Agency:
National Aeronautics and Space Administration
Branch:
N/A
Award ID:
11999
Program Year/Program:
1990 / SBIR
Agency Tracking Number:
11999
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Hansen Research Associates
P.o. Box 30133 Eugene, OR 97403
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1990
Title: TRANSPORT PROPERTIES IN NON-EQUILIBRIUM AIR MIXTURES
Agency: NASA
Contract: N/A
Award Amount: $49,766.00
 

Abstract:

THE PROPOSAL IS (1) TO DETERMINE HOW CLOSELY SIMPLE, WEIGHTED CROSS SECTIONS CAN MATCH THE COLLISION INTEGRALS OF THE CHAPMAN-COWLING FORMULATION, AS A FUNCTION OF TEMPERATURE; (2) TO DEMONSTRATE THAT SIMPLE FORMULAE FOR VISCOSITY, THERMAL CONDUCTIVITY, AND MASS DIFFUSION OF GAS MIXTURES APPROXIMATE THE FUNCTIONAL FORM OF MORE EXACT MODELS; AND (3) TO FIND EMPIRICAL ADJUSTMENTS OF THE CROSS SECTIONS AND/OR CONSTANT COEFFICIENTS IN THE MIXTURE FORMULAE WHICH WILL NOT ONLY RETAIN THE PROPER FUNCTIONAL FORM BUT WILL ALSO QUANTITATIVELY REPRODUCE MORE EXACT MODELS. THE OBJECTIVE IS TO PROVIDE A FAST EFFICIENT ALGORITHM WHICHCAN BE USED IN COMPUTATIONAL FLUID DYNAMICS PROGRAMS WITH THE MOST SPEED POSSIBLE SO THAT THESE PROGRAMS CAN FIND SOLUTIONS TO COMPLEX, NON-EQUILIBRIUM AIRFLOW CONDITIONS IN REASONABLE COMPUTATION TIMES. THE METHODS DEVELOPED WILL ALSO PROVIDE A BASIS FOR QUICK CALCULATION OF TRANSPORT PROPERTIES OF GAS MIXTURES OTHER THAN AIR.

Principal Investigator:

C. Frederick Hansen
Principal Investigator
5033444007

Business Contact:

C. frederick hansen
PRESIDENT
5033444007
Small Business Information at Submission:

Hansen Research Associates
P.o. Box 30133 Eugene, OR 97403

EIN/Tax ID:
DUNS: N/A
Number of Employees: N/A
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No