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Numericle computer simulation of the formation of transverse dunes using DNS methord
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:12 November 2010
Accepted by: none
Citation: Zhang Ruyan,Luo Chunmei.Numericle computer simulation of the formation of transverse dunes using DNS methord[OL]. [12 November 2010] http://en.paper.edu.cn/en_releasepaper/content/4390674
 
 
In this paper, the transverse dunes is 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. the simulated dunes, which is formed by unidirectional wind, develops wings from the each end of them, connects with each other and becomes essentially parallel straight ridges which is known as transverse dunes.
Keywords:Computational Fluid Dynamics;Transverse Dunes;Finite Difference Method;DNS Method
 
 
 

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