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为了验证各种气体动力学数值计算方法的可靠性,在小型风洞中对单个叶型绕流进行了一系列测量,利用双焦点激光测速仪(L2F)和测取叶型表面、壁面静压对全亚声速流场及含有激波的跨声速流场进行了细致的研究,同时还进行了激波振荡现象及探头对流场的影响的研究。获得的结果不仅可以用于检验描述流动的各种数值模型的正确性或可靠性,同时也为进一步发展数值模型提供了实验数据。通过在简单流场中的测量,积累了一些经验,例如激波前后移动现象的判析与处理,有利于今后在复杂流场中的测量。
In order to verify the reliability of various numerical methods of gas dynamics, a series of measurements were made on the flow around a single blade in a small wind tunnel. Using a bifocal laser velocity meter (L2F) and measuring the surface of the blade, The full subsonic flow field and transonic flow field with shock wave are studied in detail, and the phenomena of shock oscillation and the influence of the probe on the flow field are studied. The results obtained can not only be used to test the correctness or reliability of the various numerical models that describe the flow, but also provide experimental data for further development of the numerical model. Through the measurement in a simple flow field, some experiences have been accumulated, such as the analysis and treatment of the shock wave movement before and after, which is beneficial to the measurement in the complicated flow field in the future.