ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Numerical simulation of water droplet impact characteristics on icing surfaces based on LBM
Received date: 2023-06-19
Revised date: 2023-07-16
Accepted date: 2023-08-07
Online published: 2023-08-24
Supported by
Open Fund of Key Laboratory of Icing and Anti/De-icing of China(IADL20200101);Aeronautic Science Foundation of China(2018ZA53014);National Key Project of China(GJXM92579)
In the aircraft icing scenario, a method for solving the water droplet impact characteristics considering the complex geometry is proposed, utilizing the Lattice Boltzmann Method (LBM) method. Firstly, starting from the multi-component lattice Boltzmann model of kinetic theory, the mixed flow field of air and water droplets is proposed to be solved in a single-phase multi-component manner by approximating the motion characteristics of gas-phase water, i.e., equivalent water droplets, to those of water droplets through several reasonable assumptions. And then, considering the physical properties and assumptions of air and equivalent water droplet flow fields, a flow field calculation model is established. Finally, based on the calculation model, the mixed bypass flow fields of a cylinder and NACA0012 are calculated independently, and the water droplet impact characteristics and their droplet collection coefficient distributions are solved, showing good agreement when compared with data from literature. The results show that the proposed calculation method and computational model can effectively simulate the droplet impact and collection characteristics of equivalent water droplets on the icing surface, and the feasibility of the model is initially verified.
Dazhi SHI , Weimin SANG , Shijie LI , Bo AN . Numerical simulation of water droplet impact characteristics on icing surfaces based on LBM[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2023 , 44(S2) : 729192 -729192 . DOI: 10.7527/S1000-6893.2023.29192
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