一种水下航行体附加质量数值计算方法

周景军; 李育英; 项庆睿

doi:10.11993/j.issn.1673-1948.2013.04.002

一种水下航行体附加质量数值计算方法

doi: 10.11993/j.issn.1673-1948.2013.04.002

中国船舶重工集团公司第705研究所, 陕西西安, 710075

基金项目: 中国博士后科学基金特别资助(2013T60895)

详细信息

作者简介:
周景军(1981-), 男, 博士, 主要研究方向为鱼雷总体技术.

中图分类号: TJ630.2; TV131
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- 被引次数: 0
出版历程
- 收稿日期: 2012-10-18
- 修回日期: 2013-03-21
- 刊出日期: 2013-08-20

A Numerical Computation Method of Additional Mass for Underwater Vehicle

The 705 Research Institute, China Shipbuilding Industry Corporation, Xi′an 710075, China

摘要

摘要: 基于相对运动思想, 通过求解3D N-S方程, 给出了一种水下航行体附加质量高精度、高效的计算方法,可方便给出任意几何外形航行体的附加质量。该方法中, 水下航行体的附加惯性力(力矩)通过非定常运动与定常运动流体动力之差获得, 进而获得附加质量。通过在动量方程添加源项求解航行体非定常运动流场, 一方面保证能够模拟真实流场结构, 另一方面避免采用动网格过程中由于复杂网格重生带来的困难, 同时由于只采用了一套网格, 计算精度得到进一步保证。本文计算方法的精度通过椭球精确解得到有效验证, 具有重要的工程应用价值。
- 水下航行体 /
- 附加质量 /
- 数值计算方法 /
- 相对运动
Abstract: A high-precision and high-efficiency method of computing additional mass for an underwater vehicle is pro-posed by solving the 3-D N-S equations based on the relative motion principle. This method is convenient to compute the additional mass for an underwater vehicle with complex shapes. The additional inertia force(moment) is achieved from the difference of hydrodynamics of fluids in unsteady and steady motions, then the additional mass is obtained. By adding the source term to the momentum equation, the unsteady flow field is solved to simulate the real structure of flow field, and the difficulty generated by complex grid rebirth in using the dynamic grid is avoided. The accuracy of the proposed method is also assured because of adopting the same grid. The validity of the proposed method is verified by the exact solution of ellipsoid.
- underwater vehicle /
- additional mass /
- numerical computation method /
- relative motion

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参考文献(8)

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