A Scalable Gas-Particle Flow Simulation Tool for Lander Plume-Surface Interaction and Debris Prediction

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: 80NSSC18P2154
Agency Tracking Number: 186552
Amount: $124,946.00
Phase: Phase I
Program: STTR
Solicitation Topic Code: T9
Solicitation Number: STTR_18_P1
Timeline
Solicitation Year: 2018
Award Year: 2018
Award Start Date (Proposal Award Date): 2018-08-03
Award End Date (Contract End Date): 2019-08-26
Small Business Information
701 McMillian Way Northwest, Suite D, Huntsville, AL, 35806-2923
DUNS: 185169620
HUBZone Owned: N
Woman Owned: Y
Socially and Economically Disadvantaged: N
Principal Investigator
 Manuel Gale
 (256) 726-4860
 manuel.gale@cfdrc.com
Business Contact
 Silvia Harvey
Phone: (256) 726-4858
Email: proposals-contracts@cfdrc.com
Research Institution
 Mississippi State University
 Lee Boulevard
Mississippi State, MS, 00000-0000
 Federally funded R&D center (FFRDC)
Abstract

Spacecraft propulsive landings on unprepared regolith present in extra-terrestrial environments pose a high risk for space exploration missions. Plume/regolith interaction results in (1) the liberation of dust and debris particles that may collide with the landing vehicle and (2) craters whose shape itself can influence vehicle dynamics. To investigate such gas-granular interactions for large-scale problems using standard Lagrangian approach, particles on the order of billions would need to be modelled to account for large landing areas, making the approach impractical. An effective alternative is to use an Eulerian-Eulerian approach where the granular mixture is represented using a two-fluid model and the granular material physics are considered using constituent relations. This effort aims to provide a state-of-the-art Eulerian-Eulerian approach with novel granular material models in the highly scalable computational framework Loci used by NASA engineers. At the end of Phase I, a massively parallel Loci-based version of a gas-granular flow solver featuring compressible flow, single gas species, and novel granular material models for spherical and irregular (single-component) particle mixture will be developed and demonstrated, with a TRL starting at 2 and ending at 4. Phase II effort will add higher model fidelity to the gas phase with a multi-component approach, an extension of the granular models for poly-disperse mixtures, overset-mesh with six degrees-of-freedom for lander vehicle motion, and compatibility to other Loci-based tools and modules such as CHEM.

 

* Information listed above is at the time of submission. *

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