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Free-Surface Modeling of Cryogenic Fluids Using a Higher-Order, Unstructured…

Award Information

National Aeronautics and Space Administration
Award ID:
Program Year/Program:
2011 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
CFD Research Corporation
215 Wynn Dr., 5th Floor Huntsville, AL -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2011
Title: Free-Surface Modeling of Cryogenic Fluids Using a Higher-Order, Unstructured Grid Volume-of-Fluid (VOF) Method
Agency: NASA
Contract: NNX11CH36P
Award Amount: $99,998.00


Accurate and efficient computational modeling of free-surface flows has numerous applications of current and future relevance to NASA. At present, NASA engineers use several commercial codes for modeling cryogenic fluids. However, the free surface modeling technologies in these codes need improvements for better solution accuracy, and most are not scalable for highly parallel simulations. In this SBIR project, CFDRC and Streamline Numerics will develop and implement, in Loci-STREAM, an innovative and improved VOF methodology with the following advanced features: (1) Ability to handle triangle and quadrilateral cell types in 2-D, and tetrahedron and hexahedron cell types in 3-D; (2) Spatially second-order surface reconstruction for these cell-types; (3) Hybrid implicit-explicit time integration scheme that both maintains a sharp interface and allows realistic time-steps for the overall flow solver; and (4) Highly efficient parallelization with scalability to 1000s of processors. To demonstrate feasibility in Phase I, a previously developed 2-D stand-alone VOF module will be coupled to Loci-STREAM and validated. In Phase II, 3-D VOF capability will be developed and integrated with Loci-STREAM. An innovative multi-timescale algorithm that affords significantly larger time steps than standard VOF will also be implemented. Final demonstration of the software will be performed for practical cases to be decided in discussions with NASA/MSFC personnel.

Principal Investigator:

Sarma L. Rani
Principal Investigator

Business Contact:

Silvia Harvey
Business Official
Small Business Information at Submission:

CFD Research Corporation
215 Wynn Dr., 5th Floor Huntsville, AL -

EIN/Tax ID: 630944385
Number of Employees:
Woman-Owned: Yes
Minority-Owned: No
HUBZone-Owned: No