摘要
对壁面附近二维Rankine体的水动力干扰现象进行数值计算和试验研究,基于物面源汇和中弧线上的线性涡分布,提出一种简化数值算法.根据不同速度、攻角和壁面间距的干扰力试验值,得到尾部流动分离点的位置变化规律.以NACA0012翼型为例,比较了压力Kutta条件和2种近似Kutta条件的计算精度,用于钝体计算.在分离点上满足Kutta条件,可有效预报二维Rankine体所受壁面干扰力,解决了分布源法、普通翼型升力计算法应用于钝体的计算结果与钝体试验值不符的问题.对于其他形状钝体的壁面干扰现象,以及水下潜器的近壁面运动,该计算方法和结果亦具有参考价值.
Numerical and experimental research was performed on two-dimensional Rankine oval-wall hydrodynamic interactions using a simplified algorithm based on surface source and middle camber vortex distribution. Choosing different velocities, attack angles, and wall clearances, the forces and moments exerted on a Rankine model were measured, from which the changing rule of aft flow separation point was drawn. Using a NACA0012 case, the computing precisions of the pressure Kutta condition and two other approximate Kutta conditions were compared and one was selected for a blunt body. Using the Kutta condition at the flow separation point, the simplified algorithm can predict the interaction phenomena of a Rankine oval near wall effectively, while the numerical results of the source method and common lift algorithm cannot agree with experimental results. The numerical method and results can also be used for other blunt body-wall interaction cases and near wall moving cases of an unmanned underwater vehicle （UUV）.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2006年第1期42-47,共6页
Journal of Harbin Engineering University
基金
国家重点基础研究发展计划基金资助项目(513060102)
哈尔滨工程大学基础研究基金资助项目(HEUF04001)
关键词
水动力干扰
壁面效应
Kutta条件
面元法
潜器
hydrodynarnic interactions
wall effect
Kutta condition
panel method
unmanned underwater vehicle （UUV）
