Research on characteristics of flow around cylinder based on improved SPH method

被引：0

作者：

Yang C. ^{[1
]}

Kang Z. ^{[1
]}

Zhang C. ^{[1
]}

机构：

[1] School of Shipbuilding Engineering, Harbin Engineering University, Harbin

来源：

Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition) | 2020年 / 48卷 / 03期

关键词：

Adaptive particle refinement; Flows around a circular cylinder; Hydrodynamic coefficient; Reynolds number; Smoothed particle hydrodynamics; Wake flow;

D O I：

10.13245/j.hust.200308

中图分类号：

学科分类号：

摘要：

Aiming at the problem of excessive cost of traditional smooth particle hydrodynamics (SPH), an improved SPH method was proposed in this paper by adopted the adaptive particle refinement (APR) technology, which concentrates the fine spatial resolution in the attracted region. The interpolation of the particle parameters in the buffer area was optimized and the kernel gradient of boundary particles was corrected to eliminate the truncation error. Base on this method, the numerical simulation of the viscous flow around the cylinder under different Reynolds numbers was carried out. The wake flow and hydrodynamic coefficients of the cylinder were systematically analyzed and compared with the experimental data. The calculated hydrodynamic coefficient achieves good agreement with the experiment data and the related numerical simulation data, additionally the wake flow phenomenon observed in experiment is clearly captured. The results show that the improved method is effective and reliable, which is suitable for the study of wake flow characteristics around cylinder and has certain reference value for the research of ocean engineering fields such as drilling platform tension legs and marine risers. © 2020, Editorial Board of Journal of Huazhong University of Science and Technology. All right reserved.

引用

页码：41 / 45and68

页数：4527

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