单一倾斜热线探头在三维湍流场中的应用  

THE APPLICATION OF THE SINGLE-SIANTED HOT-WIRE TECHNIQUE IN THE THREE-DIMENSIONAL FLOW FIELD

作　　者：王凯建[1] 

机构地区：[1]北京大学国家重点湍流实验室,北京100871

出　　处：《力学学报》2002年第1期18-28,共11页Chinese Journal of Theoretical and Applied Mechanics

摘　　要：研究的目的是确立用单一倾斜热线探头进行三维湍流测试的基础技术．在阐明基本原理，基础方程式的基础上，对比实验结果，证明应用所阐明的方法、用单一倾斜热线探头进行三维湍流测试是切实可行的．对边界层壁面附近的测试结果表明考虑平均速度和变动速度的高次相关项后可以得到更加精确的实验结果．This paper describes fundamentals analysis way of the single-slanted multi-position hot-wire technique and its application to the three-dimensional flow field, such as turbulent boundary layer through gaps between roughness elements. Comparisons are made for the mean velocity, turbulent intensity, and Reynolds shear stresses profiles. The measurement result to turbulent wall boundary shows that more correct experiment result will be gotten when higher degree correlation items for mean velocity and turbulent intensity are taken into consideration.

关 键 词：边界层 响应方程式 雷诺剪切应力 单一倾斜热线探头技术 三维湍流场 变动速度高次相关项 涡量输运方程式 

分 类 号：O357.5[理学—流体力学]