Ejecta behavior during plume-surface interactions under rarefied atmospheric conditions
Ejecta behavior during plume-surface interactions under rarefied atmospheric conditions
复制标题
稀薄大气条件下羽流-表面相互作用期间的喷射物行为
DOI:
10.1016/j.actaastro.2024.02.013
复制
发表时间:
2024
影响因子:
3.5
通讯作者:
Raghav, Vrishank
中科院分区:
文献类型:
--
作者:
Silwal, Lokesh;Bhargav, Vikas N.;Stubbs, Daniel C.;Fulone, Brandon K.;Thurow, Brian S.;Scarborough, David E.;Raghav, Vrishank
Plume-surface interactions (PSI) occur during the take-off and landing of interplanetary vehicles, leading to particle ejection and the formation of craters. This can be detrimental to the vehicle and any structures or infrastructure near the landing site. A major challenge in developing a comprehensive understanding of this three-dimensional phenomenon is the need to characterize the ejecta and cratering dynamics simultaneously. Here, experiments are conducted in a vacuum chamber at different nozzle heights and ambient pressure conditions using high-speed stereo-photogrammetry and planar particle tracking velocimetry to quantify the cratering and ejecta dynamics. Predictably, it was observed that the trajectory of ejecta with a large Stokes number was mostly unaffected by the nozzle flow after leaving the crater. Under rarefied conditions, the ejecta kinematics (velocity, ejection angle, range, and height) were significantly different compared to continuum conditions. Finally, the findings demonstrate a dependency between ejecta kinematics and crater topology for the current test cases, providing critical insights into particle ejection’s initial characteristics.
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DOI:
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发表时间:
1963
期刊:
影响因子:
--
作者:
L. Roberts
通讯作者:
L. Roberts
DOI:
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发表时间:
2012
期刊:
影响因子:
--
作者:
C. Lamarche;J. Curtis;P. Metzger
通讯作者:
P. Metzger
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
P. Metzger;Jacob Smith;J. Lane
通讯作者:
J. Lane
DOI:
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发表时间:
2008
期刊:
影响因子:
--
作者:
C. Immer;J. Lane;P. Metzger;S. Clements
通讯作者:
S. Clements
DOI:
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发表时间:
1966
期刊:
影响因子:
--
作者:
L. Roberts
通讯作者:
L. Roberts