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一、前言 人们通过对紊流运动广泛深入的研究,提出了大量的紊流模型和预示紊流流场的数值方法。使用这些紊流模型对一般紊流流场进行数值预示时,先要对它们的可靠性作必要的考核和验证。考证的方祛可以是用它们预示一个“已知”的紊流流场,分析比较预示结果。“已知”紊流流场一般由实验获得,应具有较高的测量精度。二维充分发展紊流流场满足上述要求,常作为“已知”流场使用。文献[2—5]测量了不同截面尺寸矩
I. INTRODUCTION Through extensive and in-depth research on turbulent flow, a large number of turbulence models and numerical methods for predicting turbulent flow fields have been proposed. When using these turbulence models to numerically predict the general turbulent flow field, we must make the necessary assessment and verification of their reliability first. Textual research can be used to predict a “known” turbulent flow field, analyze and predict the results. The “known” turbulent flow field is generally obtained experimentally and should have high measurement accuracy. Two-dimensional fully developed turbulent flow field to meet the above requirements, often as a “known” flow field. Literature [2-5] measured the different cross-sectional moment of area