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Acta Aeronautica et Astronautica Sinica ›› 2024, Vol. 45 ›› Issue (14): 129308-129308.doi: 10.7527/S1000-6893.2023.29308

• Fluid Mechanics and Flight Mechanics • Previous Articles    

Multi⁃step method for numerical simulation of ice crystal icing

Xueqin BU1(), Ping HUANG1, Guiping LIN1,2, Yanxia LOU1   

  1. 1.School of Aeronautic Science and Engineering,Beihang University,Beijing 100191,China
    2.Hangzhou International Innovation Institute of Beihang University,Hangzhou 311115,China
  • Received:2023-07-11 Revised:2023-08-03 Accepted:2023-10-11 Online:2023-11-09 Published:2023-11-01
  • Contact: Xueqin BU E-mail:buxueqin@buaa.edu.cn
  • Supported by:
    National Natural Science Foundation of China(52272428);National Key Research and Development Program of China(2021YFB2601700);Fundamental Research Funds for the Central Universities(YWF-22-L-732)

Abstract:

In recent years, ice crystal icing has emerged as a prominent and challenging research area in aircraft and engine anti-icing. This paper presents a computational model for accurate prediction of the ice crystal icing process. The proposed model encompasses a trajectory model that accounts for irregular ice crystal shapes, an adhesion model, an erosion model, and a thermodynamic model for icing. The multi-step method is employed to simulate the ice accumulation process, involving the updating of the airflow field, ice crystal particle trajectories, and thermodynamic calculations at each time step. Additionally, the dynamic mesh technology is utilized to update the geometric boundaries of the ice formation. The research findings demonstrate that the application of the multi-step method enables stable simulation of ice formation. The stability of the ice shapes is attributed to the combined effects of reduced adhesion on the surface of ice crystals and increased erosion on pre-existing ice, ultimately leading to a dynamic equilibrium between the adhesion and erosion processes. It should be noted that the proposed model and computational approach in this paper are specifically suited for low melting rate conditions, which can guide the precise simulation of three-dimensional structural ice crystal icing in future investigations. While high melting rate scenarios would necessitate consideration of the downstream flow of ice in the future.

Key words: ice crystal icing, adhesion, erosion, multi-step method, dynamic mesh

CLC Number: