High-Fidelity Gas and Granular Flow Physics Models for Rocket Exhaust Interaction with Lunar Soil, Phase I

Metadata Updated: May 2, 2019

Soil debris liberated by spacecraft landing on the lunar surface may damage and contaminate surrounding spacecraft and habitat structures. Current numerical simulations of these events lack credibility because lunar environment complexities have never been captured in suitable models: the mixed rarefied-continuum nature of the plume's surface layer flow, and the highly irregular soil particle shapes with peculiar granular stresses, particle aerodynamics, and particle collision characteristics. CFDRC and the University of Florida (UF) propose to apply their uniquely capable simulations simulation tools to derive credible lunar gas and granular flow physics sub-models from first principles. CFDRC's unified continuum-rarefied flow solver will be applied to characterize the surface layer flow structure and assess interference effects from surface craters and rocks. The code's unique ability to resolve highly irregular shapes with an automated adaptive Cartesian approach will be applied to compute realistic particle aerodynamics. A Lagrangian particle collision model developed for efficiently simulating dense particle streams will characterize particle collision and dispersion effects. A novel fundamental soil model developed by UF to describe all constituent stresses in a single fundamental model for arbitrary particle shapes mixtures will be applied. Phase I will demonstrate the unique capabilities of the proposed simulation tools. During Phase II, these tools will be applied to create high fidelity physics sub-models for integration in current erosion simulation models.

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Public: This dataset is intended for public access and use. License: U.S. Government Work

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Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_10287
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Datagov Dedupe Retained 20190501230127
Harvest Object Id 1f26b068-207f-45e2-b1ac-898ca9d4ea4a
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2010-01-01
Homepage URL https://techport.nasa.gov/view/10287
License http://www.usa.gov/publicdomain/label/1.0/
Data Last Modified 2018-07-19
Program Code 026:027
Source Datajson Identifier True
Source Hash 9c1c03041e5528675e9d96bf8935e03ed5afe818
Source Schema Version 1.1

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