YUE Gao-wei, ZHENG Xiao-jing. Effect of Thermal Diffusion and Electrostatic Force on the Evolution of Wind-Blown Sand Flow[J]. Applied Mathematics and Mechanics, 2007, 28(2): 165-175.
 Citation: YUE Gao-wei, ZHENG Xiao-jing. Effect of Thermal Diffusion and Electrostatic Force on the Evolution of Wind-Blown Sand Flow[J]. Applied Mathematics and Mechanics, 2007, 28(2): 165-175.

# Effect of Thermal Diffusion and Electrostatic Force on the Evolution of Wind-Blown Sand Flow

• Received Date: 2005-01-11
• Rev Recd Date: 2006-10-24
• Publish Date: 2007-02-15
• A theor etical model was suggested to mathematically describe the effect of thermal diffusion from a sand-bed on evolution of a wind-blown sand flow.An upward wind field was engendered by the thermal diffusion and the coupling interaction among the horizontal and upward wind flow,saltating grains,and a kind of electr ostatic force exerted on the grains were considered in this theoretical model.The numerical results show that the effect of the thermal diffusion on the evolution process of wind-blowngrain flow is quite obvious and very similar to the effect of the electrostatic force on the evolution.Notonly the time for the entire system to reach a stea dy state (called the duration time ),the transportrate of gr ains,the mass-flux profiles and the trajectory of saltating grains are affected by the thermal diffusion and the electr ostatic force exerted on saltating grains,but also the wind profiles and the temper ature profiles at the steady state are affected by the wind-blown sand flow.
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沈阳化工大学材料科学与工程学院 沈阳 110142

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