直升机典型结构元件着水试验边界优化设计  

Optimization Design of the Helicopter Components Landing Water Test

作　　者：陈庆童[1] 陈淑平[1] 邓先来[1] 杨广根[1] CHEN Qingtong CHEN Shuping DENG Xianlai YANG Guanggen(China Helicopter Research ＆ development Institute, Jingdezhen 333001, China)

机构地区：[1]中国直升机设计研究所,江西景德镇333001

出　　处：《直升机技术》2017年第3期34-38,共5页Helicopter Technique

摘　　要：为分析直升机典型结构元件着水试验边界条件对着水试验的影响,基于CFD方法,采用VOF捕捉自由液面,结合UDF程序对典型结构元件着水试验进行模拟。为验证该CFD方法的准确性,应用该方法计算国际上研究较为普遍的楔形体自由着水问题,结果表明该方法能很好地应用于结构物着水问题。而后将该方法应用到直升机典型结构元件着水试验中,对着水试验方案进行优化设计,分析了水池的宽度、深度以及试验安装平台边界条件对着水试验的影响,得出了最佳的边界条件,并且通过对着水试验的数值模拟,给出了着水试验速度、加速度、位移、力以及压力的时间历程关系,为着水试验方案的优化设计、设备的选取以及试验数据有效性的判定提供了理论基础和技术支持。To analyze the effect of boundary condition for the helicopter components landing water test,based on the fluent software,elected the standard k-ε turbulence model,VOF method was adopted to capture the free water surface,combined with the UDF program and the dynamic mesh model to simulate the components landing water test. The paper analyzed the effect of the tank width,depth and test hoisting basket on the landing water test and obtained the best boundary conditions. Through the numerical simulation of the landing test,the paper gave the time course of velocity,acceleration,displacement,force and pressure. The paper provided a theoretical basis and technical support for landing water test scheme design,equipment selection and determine the validity of the test data.

关 键 词：直升机 元件 着水试验 优化设计 

分 类 号：V216.23[航空宇航科学与技术—航空宇航推进理论与工程]