基于相界面数据交换的结冰多相传热过程研究

Aero-engine icing can affect flight safety. Studying the mechanism of aero-engine icing process can help improve the flight safety performance and accomplish airworthiness verification. The Eulerian method was used to calculate the motion of water droplet. The energy balance method was adopted to calculate the multiphase heat transfer and flow process of icing，and the one-dimensional heat conduction model was employed to correct the process of heat conduction with wall. The data exchange model based on phase interface heat conduction equilibrium equation was proposed. Based on this model，numerical verification of icing wind tunnel test data on the engine inlet part was accomplished. The maximum icing thickness error compared by simulation and test could be controlled at about 10%. The phase interface data exchange model can accurately simulate the water film flow and the temperature gradient near wall，and can also currently exchange the flow parameters between the user defined function (UDF) and the solver. The results showed that the model had good accuracy in calculating the maximum icing thickness.