南京航空航天大学学报2024，Vol.56Issue(2)：281-290,10.DOI:10.16356/j.1005-2615.2024.02.010
电加热防/除冰过程中溢流水再冻结数值模拟
Simulation of Electrothermal Anti-icing/Deicing Process Including Runback Water Ice Accretion
刘小暄 1朱春玲 2朱程香 1曹岩1
作者信息
- 1. 南京航空航天大学航空学院,南京 210016
- 2. 南京航空航天大学航空学院,南京 210016||南京航空航天大学航空航天结构力学及控制全国重点实验室,南京 210016
- 折叠
摘要
Abstract
The electrothermal anti-icing and deicing system is often used to ensure flight safety and aerody-namic performance when aircraft encounters icing conditions.This paper establishes a coupled calculation model of multi-layer heat conduction and water film flow by using the conjugate coupling method,and devel-ops a series of numerical simulation calculations for the electrothermal anti-icing and deicing process.Myers water film model is able to stimulate non-stationary calculations,while the internal thermal conductivity mod-el of the electrothermal component is implicitly discretized by using the finite volume method.The water film model and thermal conductivity model are loosely coupled through the conjugate heat transfer method by ex-changing boundary values.Research has found that during the process of electrothermal anti-icing,the phe-nomenon of runback water refreezing occurs due to the melting of ice accumulation and the flow of water film.A flow field calculation and aerodynamic analysis are conducted on the icing shape of the electrothermal sys-tem in the later stage.It shows that the frozen overflow water on the upper and lower wing surfaces of the wing will cause disturbance to the flow field.The Q-criterion is used to determine the vortex structure behind the icing.Compared with clean airfoils without icing,the freezing of runback water at the leading edge of the wing causes significant oscillations in the pressure coefficient curve.Therefore,the problem of refreezing run-back water affects the aerodynamic performance of the wing,which leads to the undesired protective effect of the electrothermal system.关键词
飞机防/除冰/电加热防除冰/耦合传热/非稳态导热Key words
aircraft anti-icing/deicing/electrothermal anti-icing/deicing/coupled heat transfer/unsteady heat conduction分类
航空航天引用本文复制引用
刘小暄,朱春玲,朱程香,曹岩..电加热防/除冰过程中溢流水再冻结数值模拟[J].南京航空航天大学学报,2024,56(2):281-290,10.
