When a lander approaches the lunar surface, the plume from the descent engine impinges on the ground and entrains loose regolith into a high-velocity spray. This problem is simulated with a hybrid continuum-kinetic solver, where the internal nozzle flow and near-field plume are simulated with a continuum solver (data parallel line relaxation) and the regions of two-phase flow are simulated via the direct simulation Monte Carlo method. Fully coupled two-phase dust and gas motions and an inelastic grain-grain collision model have been implemented for a polydisperse distribution of particles sizes. This work examines the sensitivity of the solutions to these models for the case of steady axisymmetric plume impingement at different hovering altitudes. Of the physical phenomena modeled in this work, the dust sprays were found to be most sensitive to grain-grain collisions. The coefficient of restitution for colliding grains was parametrically studied and has a significant impact on how grain-grain collisions scatter the dust sprays.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Approach for Modeling Rocket Plume Impingement and Dust Dispersal on the Moon




    Publication date :

    2015




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English



    Classification :

    BKL:    55.60 Raumfahrttechnik
    Local classification TIB:    770/7040



    Approach for Modeling Rocket Plume Impingement and Dust Dispersal on the Moon

    Morris, Aaron B. / Goldstein, David B. / Varghese, Philip L. et al. | AIAA | 2015


    Modeling of Lunar Dust Particle Trajectories for Rocket Plume-Surface Impingement Studies

    Mantovani, James G. / Vu, Bruce T. / Lane, John E. | TIBKAT | 2021