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Unified Methodology for Simulation of Continuum and Rarefied Flows

Award Information

Agency:
Department of Defense
Branch:
Missile Defense Agency
Award ID:
91582
Program Year/Program:
2009 / SBIR
Agency Tracking Number:
B083-034-0621
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
COMPUTATIONAL SCIENCES, LLC
8000 Madison Blvd., Suite D102-351 Madison, AL -
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2009
Title: Unified Methodology for Simulation of Continuum and Rarefied Flows
Agency / Branch: DOD / MDA
Contract: W9113M-09-C-0144
Award Amount: $99,924.00
 

Abstract:

We propose to develop a stand-alone computational module for seamlessly extending the validity of continuum CFD codes into transitional and rarefied flow regimes. The module will be designed for implementation in to existing legacy codes for use in characterization of high altitude plume flows. The approach is based on a novel, regularized set of Navier-Stokes equations (RNS) that is extended to account for kinetic effects (intermediate Knudsen number, fluctuations) in the continuum approximation. RNS has several important features not found in classical NS equations that are of direct relevance high altitude plume flows: (a) Natural accounting of both continuum and rarefied gas flow regimes; and (b) Kolmogorov-scale field fluctuations resulting from a mathematical model that accounts for turbulent diffusion in a natural manner that allows direct simulation of phenomena such as laminar-turbulence transition and wall slip effects. Phase I will focus on development of a stand-alone, computational module prototype incorporating the RNS approach. The module will be connected to a characteristics-based high order compressible flow code with particle transport capabilities and will be exercised and evaluated against experimental data for a model problem that contains elements of both continuum and rarefied flows. Phase II will couple the module to flow and radiation codes used by MDA.

Principal Investigator:

Edward J. Kansa
Staff Scientist
2562700956
ejk@comscis.com

Business Contact:

Tatiana Shvetsova
Business Officer
2562700956
ts@comscis.com
Small Business Information at Submission:

COMPUTATIONAL SCIENCES, LLC
2317-A Market Place Huntsvillle, AL 35801

EIN/Tax ID: 900191003
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No