Numerical Study and Performance Evaluation of Jet Precooling in Full-Scale Inlet

被引：0
|
作者：
Qiao M. [1 ]
Xue H.-K. [1 ]
Liu X.-F. [1 ]
机构：
[1] AECC Shenyang Engine Research Institute, Shenyang
来源：
Tuijin Jishu/Journal of Propulsion Technology | 2023年 / 44卷 / 03期
关键词：
Air inlet; Evaporation efficiency; Jet precooling; Temperature decrease; Uniformity of temperature field;
D O I：
10.13675/j.cnki.tjjs.22010048
中图分类号：
学科分类号：
摘要：
Aiming at the jet precooling problem of aircraft inlet at high Mach number and high temperature，an integrated numerical calculation model of full-scale inlet jet precooling device for real aircraft is established in this paper. The effects of gas flow rate，intake temperature and jet flow rate on the performance of jet precooling device are analyzed by controlling variable method. It is found that the gas flow rate is negatively correlated with temperature decrease and positively correlated with evaporation efficiency and uniformity of temperature field. The intake temperature is positively correlated with temperature decrease，evaporation efficiency and uniformity of temperature field. The jet flow rate is positively correlated with the temperature decrease and negatively correlated with the evaporation efficiency and uniformity of temperature field. The results show that under the same inlet conditions，the special configuration of the aircraft inlet will cause the inflection point of the cooling capacity and evaporation efficiency curve at the evaporation distance of 2500mm. On this basis，an evaluation method for evaluating total temperature at the outlet of the inlet based on design of experiment is further proposed. Compared with the experimental results，it is found that this method can control the error within 5%.Therefore，it is effective to use this method to predict total temperature at the outlet of the inlet. © 2023 Journal of Propulsion Technology. All rights reserved.
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