AUV在极限流域中的力学与运动特性研究

项目名称： AUV在极限流域中的力学与运动特性研究

项目编号： No.11302176

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 数理科学和化学

项目作者： 杜晓旭

作者单位： 西北工业大学

项目金额： 30万元

中文摘要： AUV自航发射、自主回收及水下对接等过程将出现AUV在管内极限流域运动，AUV在极限流域运动的非线性力学特性的精确计算对于AUV能否实现安全发射、回收及对接具有至关重要的作用。针对该问题，本项目拟采用理论分析与实验研究相结合的方法进行系统研究。首先，采用基于势流理论改进的PANEL-FREE方法和基于N-S方程的CFD方法，分别建立AUV进出管过程的高精度非线性流体动力计算模型，研究不同工况下AUV进管和出管流体动力变化规律；其次，采用DNS方法对AUV管内运动进行模拟，得到极限流域的涡量特征，准确分析AUV与管壁边界层的干扰特性；然后，依据刚体动力学理论建立AUV进管和出管过程动力学模型，确立AUV进管和出管安全性评判准则，并进行安全性分析；最后，开展AUV进出管过程的边界层流场测试和力学特性试验研究。通过本项目的研究揭示AUV在极限流域中的力学与运动特性。

中文关键词： 自主水下航行器；极限流域；流体动力；运动特性；

英文摘要： The methodology of exploring the mechanical characteristic of AUV in constrained flow field is one of the key points for AUV self-propelled launching, underwater recovery and docking. On nonlinear mechanical problems of AUV self-propelled launching, underwater recovery and docking, the research should be taken systematically through the combination of theoretical analysis and experimental study. First of all, by using PANEL-FREE method based on the improved potential flow theory and CFD technique found on N-S equations, the high-precision nonlinear hydrodynamic computational models of the process that AUV moving into and out of tube are established respectively. Then based on the model the research is taken to explore the rules of the hydrodynamics during AUV moving into and out of tube. Secondly, in order to get the vortex characteristic and the analysis of boundary layer interaction，the process AUV moving inside the tube is simulated through the DNS method. Thirdly, dynamic equations and security rules of the process that AUV moving into and out of tube are set up base on the rigid dynamic theory. At last, for the reference of the numerical simulation the experiments are carried out to research the boundary layer and mechanical characteristic. Through this project, mechanical and motion characteristic rules of

英文关键词： Autonomous Underwater Vehicle；Constrained Flow Field；Hydrodynamics；Motion Characteristic；