Numerical simulation of water droplet impact characteristics on icing surfaces based on LBM

被引：0
|
作者：
Shi D. [1 ]
Sang W. [1 ]
Li S. [1 ]
An B. [1 ]
机构：
[1] School of Aeronautics, Northwestern Polytechnical University, Xi’an
来源：
Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica | 2023年 / 44卷
关键词：
air⁃ craft icing; Cartesian grid; lattice Boltzmann method; multi-component; water droplet impact characteristics;
D O I：
10.7527/S1000-6893.2023.29192
中图分类号：
学科分类号：
摘要：
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，consid⁃ ering 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 coef⁃ ficient 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 collec⁃ tion characteristics of equivalent water droplets on the icing surface，and the feasibility of the model is initially verified. © 2023 Chinese Society of Astronautics. All rights reserved.
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