水下航行器水动力系数计算方法  

Calculation method of hydrodynamic coefficients for underwater vehicles

作　　者：高婷[1] 庞永杰[1] 王亚兴 陈庆龙 GAO Ting;PANG Yongjie;WANG Yaxing;CHEN Qinglong(State Key Laboratory of Science and Technology on Autonomous Underwater Vehicle,Harbin Engineering University,Harbin 150001,China;Shenyang Institute of Automation,Chinese Academy of Sciences,Shenyang 110016,China)

机构地区：[1]哈尔滨工程大学水下机器人技术重点实验室,黑龙江哈尔滨150001 [2]中国科学院沈阳自动化研究所,辽宁沈阳110016

出　　处：《哈尔滨工程大学学报》2019年第1期174-180,共7页Journal of Harbin Engineering University

基　　金：国家高技术研究发展计划(2011AA09A106)

摘　　要：为了高效地求取水下航行器的水动力系数,本文提出了一种空间拘束运动模拟方法。该方法仅需一次算例就可求得方程中的全部水动力系数,在保证计算精度的同时极大地缩短了计算周期。为了验证该方法的准确性,利用航行器完成了平面机构运动试验并模拟分析该试验的数值。2种计算流体动力学方法得到的水动力系数值接近。说明在设计初期,用空间拘束运动模拟方法代替现有的常规平面拘束运动数值模拟,快速求得设计艇型的水动力系数是可行的。此外,该方法的计算结果与水池试验数据的误差较小,进一步表明该方法的可行性。This paper proposes an approach for simulating spatial captive motion to increase the efficiency for estimating hydrodynamic coefficients of underwater vehicles.Instead,of the traditional repetitive and time-consuming process,the proposed spatial captive motion method could provide all necessary information for determination of all required coefficients in only one simulation while ensuring the accuracy of the calculation and considerably shortening the cycle.Numerical simulations were carried out based on planar motion mechanism tests for an underwater vehicle to validate the accuracy of the proposed method.The comparison results of two CFD simulation methods are close in the derived hydrodynamic coefficient.Hence,in the early stage of design,hydrodynamic coefficients of the design hull can be quickly obtained by substituting spatial captive motion simulation for existing CFD methods.The calculation results obtained by the proposed method have smaller errors in comparison with the test data in water tank,thereby confirming the feasibility of the method.

关 键 词：水动力系数 水下航行器 空间拘束运动 操纵性 计算流体力学 平面运动机构 水动力试验 高效 

分 类 号：U661.1[交通运输工程—船舶及航道工程]