| 抛弃式探头下沉运动数值计算的网格划分方法研究 |
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| 引用本文： | 陈振涛,刘凤,王晓蕾,叶松.抛弃式探头下沉运动数值计算的网格划分方法研究[J].海洋技术,2017,36(5):35-40. |
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| 作者姓名： | 陈振涛 刘凤 王晓蕾 叶松 |
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| 作者单位： | 国防科技大学气象海洋学院,江苏南京,211101 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 各类抛弃式探头下沉运动的数值计算研究都需要对探头表面和整个计算域进行网格划分的前处理过程,选择不同的网格划分方法和划分精度,会影响数值计算速度和计算精度,最终生成的网格质量决定了计算结果的收敛性和准确性。针对抛弃式探头的复杂结构,对比了两种网格划分方法、三种网格划分精度,完成探头计算区域的网格划分,采用k-ε湍流模型,进行抛弃式探头下沉运动的数值计算,并将计算结果与水箱和水库实验结果进行对比,验证了混合网格划分方法和普通精度网格对抛弃式探头下沉运动数值计算的适用性,研究结果对类似较为复杂结构的水下运动体的数值计算前处理过程具有一定的参考和借鉴意义。
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| 关 键 词： | 抛弃式探头 数值计算 网格划分 混合网格 |
Research on the Mesh Dividing Method for Expendable Probe Sinking Simulation |
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| CHEN Zhen-tao,LIU Feng,WANG Xiao-lei,YE Song.Research on the Mesh Dividing Method for Expendable Probe Sinking Simulation[J].Ocean Technology,2017,36(5):35-40. |
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| Authors: | CHEN Zhen-tao LIU Feng WANG Xiao-lei YE Song |
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| Institution: | National University of Defense Technology |
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| Abstract: | The pre-treatment process with mesh dividing is required for the surface of probe and the whole computational field when conducting expendable probe sinking numerical simulation. Different meshing methods and meshing densities will affect the calculation speed and accuracy, and the quality of the resulting mesh determines the convergence and accuracy of the calculation results. In view of the complex structure of the expendable probe, two meshing methods and three mesh densities are compared, with the mesh division of the probe computational field completed. Numerical simulation of the probe sinking motion is carried out by selected turbulence model, whose results are compared with the experimental results of the laboratory pool and lake. This paper verifies the applicability of the hybrid mesh dividing method and the general precision of mesh density in expendable probe sinking numerical simulation. The results of the study can be used as a reference for the numerical simulation of underwater moving bodies with complex structures. |
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| Keywords: | expendable probe numerical simulation mesh dividing hybrid mesh |
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