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Limitations of applying grain weight similitude in aeolian studies with NASA Mars Wind Tunnel
Aeolian Research ( IF 3.3 ) Pub Date : 2021-08-27 , DOI: 10.1016/j.aeolia.2021.100732
J. Marshall 1, 2 , L.K. Fenton 1 , J.J.B. Harlow 3
Affiliation  

The Mars Surface Wind Tunnel at NASA Ames Research Center is used to simulate windblown (aeolian) movement of sand and dust on the martian surface. Because objects weigh less on Mars, the tunnel employs lighter sand in the form of crushed walnut shell to compensate for Earth’s higher gravity. The tunnel is thus operated on the principle of ‘grain-weight similitude’. This approach enables successful replication of transport thresholds but it leads to major discrepancies for other aspects of grain behavior.



中文翻译:

在 NASA 火星风洞风成研究中应用粒重相似的局限性

美国宇航局艾姆斯研究中心的火星表面风洞用于模拟火星表面沙尘的风吹(风成)运动。由于火星上的物体重量较轻,因此隧道采用压碎的核桃壳形式的较轻的沙子来补偿地球较高的重力。因此,隧道是根据“粒重相似”的原理运行的。这种方法可以成功复制运输阈值,但会导致谷物行为的其他方面存在重大差异。

更新日期:2021-08-27
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