Acta Physica Sinica, Volume. 68, Issue 10, 104701-1(2019)

Fluid slip over hydrophobic surfaces in microchannels: a dissipative particle dynamics study

Shao-Feng Xu*, Ying-Hou Lou, Yao-Feng Wu, Xiang-Yang Wang, and Ping He
Figures & Tables(12)
Sketch of the solid wall structure.固体壁面结构示意图
Sketch of the modified bounce-forward reflection.修正的向前反弹机制
Sketch of simulation system of Couette flow.模拟系统示意图
No-slip and partial slip status at a solid-fluid interface壁面边界的无滑移和部分滑移示意图
The velocity profile of DPD simulation result compares to the analytical solution.DPD模拟的速度分布与Navier-Stokes(NS)分析解对比
The density and temperature profiles of DPD simulation results compare to the analytical solutions.DPD模拟的密度、温度分布与Navier-Stokes(NS)分析解对比
The shear stress profile of DPD simulation result compares to the analytical solution.DPD模拟的剪切应力分布与分析解对比
Velocity distributions due to different values of .排斥力系数分别为9.68, 13.69, 16.77, 19.36, 21.65时的速度分布
Slip velocity versus .滑移速度与排斥力系数的关系
Slip length versus .滑移长度b与排斥力系数的关系
The density profiles for different values and for no slip condition.不同排斥力系数时和无滑移时的密度分布
  • Table 1. The linear fit velocity profiles, slip velocity and slip length with respect to different . 不同排斥力系数 时拟合的速度分布及对应的滑移速度和滑移长度

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    Table 1. The linear fit velocity profiles, slip velocity and slip length with respect to different . 不同排斥力系数 时拟合的速度分布及对应的滑移速度和滑移长度

    ${a_{\rm wf}}$拟合的速度直线滑移速度滑移长度
    13.69${v_x} = 0.1936z - 0.0009$0.09510.4912
    16.77${v_x} = 0.1864z - 0.0036$0.20041.0751
    19.36${v_x} = 0.1778z + 0.0044$0.33741.8976
    21.65${v_x} = 0.1691z + 0.0002$0.46372.7422
    9.68(无滑移)${v_x} = 0.2z$(理论解) 00
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Shao-Feng Xu, Ying-Hou Lou, Yao-Feng Wu, Xiang-Yang Wang, Ping He. Fluid slip over hydrophobic surfaces in microchannels: a dissipative particle dynamics study[J]. Acta Physica Sinica, 2019, 68(10): 104701-1

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Paper Information

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Received: Nov. 12, 2018

Accepted: --

Published Online: Oct. 29, 2019

The Author Email:

DOI:10.7498/aps.68.20182002

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