Liquid Flow Simulation onto the Horizontal Square Rod Array
Liquid Flow Simulation onto the Horizontal Square Rod Array
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DOI：
10.3811/jjmf.2022.012
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发表时间：
2022-03
期刊：
影响因子：
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通讯作者：
M. Sugimoto;Tatsuya Miyazaki;Zelin Li;M. Kaneda;K. Suga
中科院分区：
文献类型：
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作者：
M. Sugimoto;Tatsuya Miyazaki;Zelin Li;M. Kaneda;K. Suga
本文采用数值方法研究了流体在水平方棒阵列上的润湿行为。连杆的尺寸参照汽车定子线圈的实际尺寸。计算参数为抽油杆间隙和粘度，以研究抽油杆结构与流体性质的相关性。流体流动和相输运均采用三维相场晶格玻尔兹曼方法。随着杆隙的增大，润湿杆数和面积减小，轴向润湿占主导地位。杆间液体在窄间隙处支持沿展向的润湿，但在宽间隙处干扰轴向的润湿。对于黏度，黏度越高，润湿面积越小，杆间毛细长度越长。无量纲润湿面积减小，直至同时包含杆隙和粘度的无量纲数的阈值，然后收敛于恒定值。用类比法估计了单位面积的热排出量。
In this study, the wetting behavior of fluid onto the horizontal square rod array is numerically investigated. The dimension of the rod is referred to the actual stator coil of an automobile. The computational parameters are the gap of the rod and the viscosity to investigate the dependency of the structure and fluid property. The three-dimensional phase-field lattice Boltzmann method is used both for the fluid flow and phase transport. As the rod gap increases, the wetting rod number and area decrease, and the wetting in the axial direction of the rod becomes dominant. The liquid among rods supports the wetting to the spanwise direction at the narrow gap, but it disturbs the axial direction wetting at the wider gap. As for the viscosity, the higher viscosity induces less wetting area, and the capillary length among rods becomes longer. The dimensionless wetting area decreases until the threshold value of dimensionless number including both rod gap and viscosity, then it converges to the constant value. The heat removal per unit area is estimated by using an analogy.