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分析了常见的3种飞机防冰腔结构,应用Gambit软件建立了双蒙皮防冰腔结构网格模型。采用Spalart-Allmaras湍流模型模拟热气在防冰腔内的流动状况,采用Fluent软件进行传热效率分析,建立了防冰腔结构参数对传热效率的重要性测度模型。通过随机响应面法建立防冰腔结构参数与传热效率的函数关系,采用低分散性抽样法求解防冰腔结构参数的重要性测度,建立了防冰腔结构参数的重要性测度分析流程。分析结果表明:当笛形管中心到外蒙皮的距离从35.15mm增加到38.85mm时,传热系数由0.505减小到0.463;当双蒙皮通道高度从2.85mm增加到3.15mm时,传热系数由0.495减小到0.476;当射流孔孔径从1.90mm增加到2.10mm时,传热系数从0.505减小到0.494;当射流孔角度从14.25°增加到15.75°时,传热系数从0.476增加到0.494。防冰腔结构参数的重要性排序依次为射流孔角度、笛形管中心到外蒙皮距离、射流孔孔径、双蒙皮通道高度,在防冰腔结构加工与装配过程中,需要重点考虑射流孔角度与笛形管中心到外蒙皮距离这2个参数。
The common ice-proofing structures of three kinds of aircraft are analyzed. The grid model of double ice-proofing structure is established by Gambit software. Spalart-Allmaras turbulence model was used to simulate the flow of hot gas in the ice-proof chamber. The heat transfer efficiency was analyzed by Fluent software, and the importance measure model of ice-proof chamber structure parameters was established. Through the random response surface method, the function relationship between the structural parameters and the heat transfer efficiency of the anti-icing chamber was established. The importance measure of the structural parameters of the anti-icing chamber was solved by the low-dispersion sampling method. The results show that the heat transfer coefficient decreases from 0.505 to 0.463 when the distance from the center of the flute to the outer skin increases from 35.15 mm to 38.85 mm. When the height of the double skin passage increases from 2.85 mm to 3.15 mm, The thermal coefficient decreases from 0.495 to 0.476. When the orifice diameter increases from 1.90mm to 2.10mm, the heat transfer coefficient decreases from 0.505 to 0.494. When the jet orifice angle increases from 14.25 ° to 15.75 °, the heat transfer coefficient increases from 0.476 Increase to 0.494. The order of importance of structural parameters of the anti-ice chamber followed by the angle of the jet hole, the distance from the center of the flute to the outer skin, the diameter of the jet hole and the height of the double skin passage. During the processing and assembly of the anti-ice structure, Hole angle and the center of the tube to the outer skin of these two parameters.