摘要
水上无人机作为一种特殊的飞行器,其起飞滑行阶段阻力性能研究非常重要。针对水上无人机机腹部分形状,提出一种基于计算流体力学软件的微型水上无人机跨介质阻力数值模拟方法。使用流体体积两相流模型方法,分别对微型水上无人机浮体及其附属物进行周围流场的数值模拟。采用Bezier曲线拟合机腹形状,使用二分法寻求飞机受阻力最小时机腹最低点相对于吃水线的位置,以减小阻力。结果表明,机腹最低点相对于吃水线的最佳位置可使微型水上无人机受到更小的阻力,较实验中最大阻力减小17.44%。
As a special kind of aircraft,water UAV is very important for the study of resistance performance during take-off and taxiing stage.This paper presents a numerical simulation method based on CFD software for cross boundary resistance water UAV.VOF model is used to simulate the flow field of the floating body and its appendages.By using the Bezier curve to fit the belly shape,the bisection method is used to find the position of the lowest point of the plane with the minimum time of resistance to the water line,so as to reduce the resistance.The results show that the optimum position of the lowest point of the machine is smaller than that of the waterline,and the maximum resistance in the experiment is 17.44%.
作者
王帅
张兵
张德鑫
蔡泽君
葛朝廷
陈峥
WANG Shuai;ZHANG Bing;ZHANG Dexin;CAI Zejun;GE Chaoting;CHEN Zheng(School of Mechanical Engineering,Hefei University of Technology,Hefei 230009,China)
出处
《机械工程师》
2019年第1期122-124,共3页
Mechanical Engineer
基金
合肥工业大学2017年校级大学生创新性实验(2017CXCY019)
