体-翼连接干扰流动对局部区域气动热环境影响的研究

Progress in the Study on the Local Thermal Characteristics of Body-fin Junction Interaction Flow

针对气动布局中常见的体-翼连接形式对局部气动热环境的影响进行了研究进展综述。首先,分析了体-翼连接流动中有粘/无粘干扰对流场及局部气动热环境的影响特征。其次,梳理了流动状态、流动参数和几何参数对体-翼连接流场中流动结构和热环境的影响规律和研究进展。数值研究中以工程方法和CFD技术为主,工程方法可以给出平均场的热流分布,预测偏差在20%左右;CFD技术能够给出更为精细的流场信息和热流特征,但在流动分离尺度、脱体激波位置、热流峰值大小方面仍然存在一定的预测不足。最后,针对体-翼干扰对局部热环境影响的研究方向,指出了可以深入开展的研究方向,为体-翼连接干扰流动的热流精细预测研究形成了研究基础。

The progress in the study on the local thermal characteristics of body-fin junction interaction flow is reviewed.Firstly,the complex flow field resulted from strong inviscid/viscid interaction in the body-fin junction flow is analyzed,as well as its affection on the local thermal characteristics.The affection of flow status,flow and geometry parameters on local thermal characteristics is summarized.Numerical study is carried out with engineering method and CFD.The engineering method has the ability to provide the profile of heat flux with the accuracy about 20% from experimental data.While the CFD method can offer both the detail of flow structures in the field and thermal characteristics,but deficiency exists on the length of separation,the position of bow shock and the peak value of the heat flux.Finally,the research tendency and the key problems needed to be resolved in this kind of flow are summarized.