Experimental and numerical study of Sharp’s shadow zone hypothesis on sand ripple wavelength
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- 作者：Erez Schmerlera ; Itzhak Katraa ; Jasper F. Kokb ; Haim Tsoara ; Hezi Yizhaqc ; d ; yiyeh@bgu.ac.il" class="auth_mail" title="E-mail the corresponding author
- 刊名：Aeolian Research
- 出版年：2016
- 出版时间：September 2016
- 年：2016
- 卷：22
- 期：Complete
- 页码：37-46
- 全文大小：2782 K
文摘
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Sharp’s shadow zone hypothesis for ripples was tested by wind tunnel experiments.
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The effective shadow zone increases linearly with shear velocity.
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The shadow zone is not completely screened from the impact of saltators.
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Numerical simulations show a wide distribution of impact angles.
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The impact angle decrease with shear velocity and grain diameter.