| CFD动态网格技术在水下航行体非定常操纵运动预报中的应用研究 |
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| 引用本文： | 李迎华,吴宝山,张华.CFD动态网格技术在水下航行体非定常操纵运动预报中的应用研究[J].船舶力学,2010,14(10):1100-1108. |
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| 作者姓名： | 李迎华 吴宝山 张华 |
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| 作者单位： | 中国船舶科学研究中心,江苏,无锡,214082;中国船舶科学研究中心,江苏,无锡,214082;中国船舶科学研究中心,江苏,无锡,214082 |
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| 摘 要： | 针对水下低速航行体非定常操纵运动中雷诺数及水动力系数随时间变化这一特点,文章采用基于动态网格技术的CFD数值方法对其进行运动模拟.通过对传统动态混合网格模型进行发展,提出了一种改进的动态混合网格模型,以此建立了非定常操纵运动数值预报方法.为验证所建立的数值预报方法对水下低速航行体操纵运动水动力的预报精度,并以带攻角均匀直航的滑行状态为研究对象,应用动网格技术对一典型水下低速航行体缩比模型主体及带附体的水动力进行了计算,结果与风洞模型试验结果吻合较好;文中进而将其应用于一水下滑翔机自航模非定常运动的预报,结果与试验符合较好,初步验证了动网格技术的应用能力和所建立的预报方法的有效性.文中的工作可以为水下航行体及其自航模非定常操纵运动的数值模拟提供基础.
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| 关 键 词： | 水下航行体 非定常运动 水动力 动态混合网格 数值模拟 |
Research on application of prediction for unsteady maneuvering motion of underwater vehicle by dynamic mesh technique in CFD |
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| LI Ying-hua,WU Bao-shan,ZHANG Hua.Research on application of prediction for unsteady maneuvering motion of underwater vehicle by dynamic mesh technique in CFD[J].Journal of Ship Mechanics,2010,14(10):1100-1108. |
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| Authors: | LI Ying-hua WU Bao-shan ZHANG Hua |
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| Institution: | LI Ying-hua,WU Bao-shan,ZHANG Hua(China Ship Scientific Research Center,Wuxi 214082,China) |
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| Abstract: | The Reynolds number and hydrodynamic coefficients will change as time during the unsteady maneuvering motion for the underwater vehicle with low speed.For this sort of problem,numerical simulation with CFD method on the basis of dynamic mesh technique was selected for the simulation in this paper.First,traditional dynamic mixed grid model was developed and an improved one was brought up.Then,numerical simulation method for unsteady maneuvering motion was established.In order to validate the accuracy of pred... |
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| Keywords: | underwater vehicle unsteady motion hydrodynamic forces dynamic mixed grid numerical simulation |
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