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一、实验模型和设备 研究用的实验模型为一个带有进气导流段的矩形截面S弯扩压器(见图1)。进气导流段设有可更换部分,使导流段相对扩压器的角度在攻角方向由0°变为5°、10°、15°、30°、45°或60°,以改变扩压器进口截面的气流条件。导流段的进口采用了ρ=60sin2α的双纽线外形。模型设计及其详细的几何尺寸见文献[1]。
First, the experimental model and equipment The experimental model used for research is a rectangular section with intake diversion section S-bend diffuser (see Figure 1). The intake diversion section is provided with a replaceable section so that the angle of the diversion section relative to the diffuser changes from 0 ° to 5 °, 10 °, 15 °, 30 °, 45 ° or 60 ° in the angle of attack to vary Air diffuser inlet cross-section conditions. The inlet of the diversion section adopts the double-line appearance of ρ = 60sin2α. The model design and its detailed geometry are shown in [1].