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Qualitative Comparison of Pathfinder Three-Dimensional Transient Gas Granular Simulation Results to Imagery from a Subscale, Reduced Pressure Plume Surface Interaction Ground TestNASA’s Game Changing Development Program, funded by NASA’s Space Technology Mission Directorate, the development of simulation capability for the prediction of extra-terrestrial Plume Surface Interaction (PSI) environments has been undertaken by the Fluid Dynamics Branch at NASA/MSFC. The PSI Project, planned to be completed over a four year period, contains a Predictive Simulation Capability (PSC) Element focused on creating simulation capability for the reliable and accurate prediction of PSI in Martian (~600 Pa) and Lunar (vacuum) ambient environments. In addition to the PSC Element, the PSI Project also contains a companion Ground Testing Element for development of focused datasets for validation of predictive capability as well as a Flight-focused Instrumentation Element. This paper describes the first Pathfinder three-dimensional, transient simulation of the test configuration used to acquire erosion and cratering test data as part of the Physics Focused Ground Test conducted by the PSI Project in FY2021. This first pathfinder simulation was conducted using the Loci/GGFS (Gas Granular Flow Solver), a computational fluid dynamics tool developed in part with funding provided by the PSI Project. Crater growth and ejecta flow paths from the pathfinder simulation is compared to raw high-speed imagery PFGT results of the crater growth. There is significant similarity of test and simulation to warrant expending resources on a more rigorous quantitative Validation Assessment.
Document ID
20220016899
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
J S West
(Marshall Space Flight Center Redstone Arsenal, Alabama, United States)
William Krolick
(Jacobs (United States) Dallas, Texas, United States)
Peter A Liever
(Jacobs (United States) Dallas, Texas, United States)
Date Acquired
November 8, 2022
Subject Category
Fluid Mechanics And Thermodynamics
Spacecraft Instrumentation And Astrionics
Meeting Information
Meeting: Joint Army-Navy-NASA-Air Force (JANNAF) Meeting
Location: Huntsville, AL
Country: US
Start Date: December 5, 2022
End Date: December 9, 2022
Sponsors: Joint Army-Navy-NASA-Air Force (JANNAF)
Funding Number(s)
WBS: 954879.04.02.62.14
CONTRACT_GRANT: 80MSFC18C0011
Distribution Limits
Public
Copyright
Public Use Permitted.
Technical Review
NASA Peer Committee
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