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附件机匣作为航空发动机重要部件之一,其产热和散热的问题比较复杂.针对以往附件机匣相关研究只关注固体域的产热、散热分析,而对滑油散热作用不能充分考虑这一问题的现状,提出了基于流体仿真思想的稳态温度场分析方法.首先,通过分析附件机匣产热、散热问题的基本规律和特点,进一步采用k-ε湍流模型来模拟机匣内的情况,多相流模型模拟滑油,并且使用多参考坐标系模拟滑油在运动过程中的换热.最后,以某附件机匣作为具体应用案例,验证了方法的正确性和可行性,从而形成了一套行之有效的使用FLUENT软件对附件机匣进行稳态温度场仿真分析的模型和方法.研究的成果对于后续附件机匣的可靠性与寿命分析有重要支撑作用.
As one of the important components of aeroengine, the attachment receiver has more complicated problems of heat production and heat dissipation.For the past research of the attachment receiver, only the heat production and the heat dissipation analysis of the solid domain are concerned, but the heat dissipation effect of the oil can not fully consider this The paper presents a steady-state temperature field analysis method based on the idea of fluid simulation.Firstly, by analyzing the basic laws and characteristics of heat and heat dissipation of the receiver casing, the k-ε turbulence model is further used to simulate the situation in the receiver , Multi-phase flow model to simulate the oil, and use the multi-reference coordinate system to simulate the heat transfer during the movement of the oil.Finally, with an attached casing as a practical application case, the correctness and feasibility of the method are verified to form A set of effective models and methods for simulating the steady-state temperature field of the accessory casing by using the FLUENT software are provided.The results of the research have an important supporting role on the reliability and life analysis of the subsequent attachment casing.