Plume-surface interaction (PSI) effects during propulsive landing are a major risk factor in the development of larger human class Mars and Moon landers. The NASA/MSFC Fluid Dynamics Branch is applying a framework of PSI simulation tools to predict plume impingement flow, plume-induced erosion and cratering, and debris transport to deliver PSI environments to NASA and commercial customer projects. The Loci/CHEM program is applied in predicting the plume flow and impingement environments with high-fidelity moving body simulation capabilities for lander terminal descent PSI analyses. The gas-granular flow solver (GGFS) multi-phase flow solver enables simulations of particle flows of complex extra-terrestrial regolith materials subject to lander plume-surface interaction to capture surface regolith erosion, cratering, crater induced upward flow redirection, ejecta streams, and dust cloud lofting. The NASA debris transport analysis (DTA) toolset is applied to post-process the simulations and predict debris transport risks to the lander and define farfield stay-out zones. An overview of current capabilities of these tools and efforts to extend the existing tool capabilities to capture the more complex mixed continuum-rarefied flow in a lunar vacuum is presented. The simulation tool components are currently being brought to application readiness for project support under a project awarded by the NASA game changing development (GCD) program. The tools will be further improved, fully implemented and matured to application readiness, and validated against existing and new PSI experimental data to be generated under the project. Recent NASA program application examples including Mars InSight lander and Apollo Lunar Module plume-surface interaction predictions are presented.


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    Titel :

    Gas-Particle Flow Simulations for Martian and Lunar Lander Plume-Surface Interaction Prediction


    Beteiligte:

    Kongress:

    17th Biennial International Conference on Engineering, Science, Construction, and Operations in Challenging Environments ; 2021 ; Virtual Conference


    Erschienen in:

    Erscheinungsdatum :

    2021-04-15




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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