Sand collisions kick up storms

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Sand collisions kick up storms

机译：沙尘暴引发暴风雨

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Sandstorms whipped up by desert winds owe their strength to mid-air collisions between sand grains. Marcus Carneiro and Hans Herrmann at the Swiss Federal Institute of Technology in Zurich and their colleagues used computer simulations to show that without collisions, sand grains whizz along close to the ground or make small hops. But when they encounter each other in the air, a few particles are bounced upwards off their neighbours and are accelerated by the stronger winds that blow higher up.

机译：沙尘暴是由于沙粒之间的空中碰撞而被沙漠风刮起的。苏黎世瑞士联邦理工学院的Marcus Carneiro和Hans Herrmann及其同事使用计算机模拟显示，在没有碰撞的情况下，沙粒在靠近地面的地方摇晃或跳了一小步。但是，当它们在空气中彼此相遇时，一些粒子会从邻居处弹起，并被吹向更高处的强风加速。

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《Nature》 |2013年第7462期|256-256|共1页
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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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正文语种 eng
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1. Sand storms： CFD analysis of Reynolds stress and collision stress of particles near sand bed [J] . Yu Zhang, Jiecheng Yang, Dayou Liu, 中国颗粒学报：英文版 . 2010,第004期

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2. Sand storms: CFD analysis of Reynolds stress and collision stress of particles near sand bed [J] . Yu Zhang, Jiecheng Yang, Dayou Liu, 颗粒学报（英文版） . 2010,第004期
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Sand collisions kick up storms

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