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AN EULERIAN-LAGRANGIAN ANALYSIS FOR LIQUID FLOWS WITH VAPOR BUBBLES

Award Information

Agency:
National Aeronautics and Space Administration
Branch:
N/A
Award ID:
12097
Program Year/Program:
1991 / SBIR
Agency Tracking Number:
12097
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
SCIENTIFIC RESEARCH ASSOC., INC.
P. O. Box 1058, 30C Hebron Avenue Glastonbury, CT 06033
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 2
Fiscal Year: 1991
Title: AN EULERIAN-LAGRANGIAN ANALYSIS FOR LIQUID FLOWS WITH VAPOR BUBBLES
Agency: NASA
Contract: N/A
Award Amount: $499,670.00
 

Abstract:

AN INNOVATIVE APPROACH IS PROPOSED TO DEVELOP AN ANALYSIS FOR LIQUID FLOWS WITH VAPOR BUBBLES, SUCH AS THOSE WHICH OCCUR IN BEARINGS, SEALS, AND PUMPS IN LIQUID ROCKET ENGINES. THE APPROACH IS BASED ON A COMBINED EULERIAN-LAGRANGIAN ANALYSIS, IN WHICH THE CONTINUOUS (LIQUID) PHASE IS TREATED BY SOLVING A SYSTEM OF EULERIAN CONSERVATION EQUATIONS, WHILE THE DISCRETE (VAPOR BUBBLE) PHASE IS DEALT WITH BY INTEGRATING LAGRANGIAN EQUATIONS OF MOTION. VAPOR BUBBLES OF CHANGING SIZE CAN BE ACCOMMODATED EASILY BY THIS ANALYSIS, AND THE PROCESSES OF VAPOR BUBBLE FORMATION, GROWTH, COALESCENCE, AND COLLAPSE CAN BE SIMULATED BY INCLUDING APPROPRIATE MODELS. BUBBLE MASS, MOMENTUM, AND ENERGY INTERCHANGE SOURCE TERMS IN THE EULERIAN CONSERVATION EQUATIONS ACCOUNT FOR THE EFFECTS OF BUBBLE MOTION AND OTHER BUBBLE PROCESSES ON THE CONTINUOUS (LIQUID) PHASE. THE RESULTING PROCEDURE WILL BE CAPABLE OF ADDRESSING THE EFFECT OF VARIOUS PARAMETERS THAT ARE OF IMPORTANCE IN THE DESIGN OF BEARINGS, SEALS, AND PUMPS.

Principal Investigator:

Jayant S. Sabins
Senior Research Scientist
2036590333

Business Contact:

Henry mcdonald
PRESIDENT
2036590333
Small Business Information at Submission:

Scientific Research Associates
P.o. Box 1058 Glastonbury, CT 06033

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