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Numericle simulation of the formation of star dunes with DNS method
Zhang Ruyan 1 *,Luo Chunmei 2
1.State Key Labroatory of Petroleum Resource and Prostectiong, Colege of Geophysics and Information Engineering, China University of Petorleum
2.College of Geophysics and Information Engineering, China University of Petorleum
*Correspondence author
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Funding: 高等学校博士学科点专项科研基金资助课题(No.200804251021)
Opened online: 4 November 2010
Accepted by: none
Citation: Zhang Ruyan ,Luo Chunmei.Numericle simulation of the formation of star dunes with DNS method[OL]. [ 4 November 2010] http://en.paper.edu.cn/en_releasepaper/content/4389812
 
 
In this paper, the star dunes with five arms are simulated numerically in order to make clear the mechanism of the formation. The numerical method employed in this study can be divided into three parts: (1) Calculation of the air flow above the sand dunes; (2) Estimation of the sand transfer caused by the flow through the friction; (3) Determination of the shape of the sand ground. Since the computational area has been changed due to the last step, these procedures are repeated until typical shapes of the sand dunes are formed. When the winds blow from five directions, the sand dune extends at five directions and becomes the shape of a star with five arms.
Keywords:Computational Fluid Dynamics; Star Dunes; finite difference method; DNS method
 
 
 

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