湍流度对翼身组合体大攻角气动特性的影响研究

The research of effect of flow turbulence on the aerodynamic characteristics of a wing body combination at high angles of attack

简要地阐述了不同湍流度情况下某翼身组合体模型头部无粗糙带以及粘贴有两侧型粗糙带，４０°，６０°和７０°“只”字型粗糙带等５ 种状态的实验结果，并对实验结果进行了分析。实验的湍流度为：０．０２％ ，０．１０％ 和０．３３％ 。实验结果表明，不同的粗糙带对模型的气动特性有较大的影响。总的来说，上述几种粗糙带状态对气动特性的影响可以简单地分成两种类型，即“有影响型”和“无影响型”。研究还表明，湍流度对大攻角时气动特性的影响是不可忽视的，并且表现出十分复杂的特性。当湍流度自０．１０％ 变化到０．３３％ 时，湍流度对该翼身组合体模型气动特性的影响相对而言并不大。但当湍流度自０．０２％ 变化到０．１０％ 时。

This paper describes the wind tuunel test results of a wing body combination with no rough band and two side type,40°,60° and 70° ‘R’ type rough band on model nose at different flow turbulence levels.The analysis of test results were also given.The flow turbulence levels used in this test were 0.02%,0.10% and 0.33%. Test results show that the effect of flow turbulence on the aerodynamic characteristics at high angles of attack cant be ignored,and this effect is very complex.The effect of flow turbulence on the aerodynamic characteristics of a wing body combination at high angles of attack is not large when the turbulence level veried from 0.10% to 0.33%,but when the turbulence level veried from 0.02% to 0.10%,the effect is large.