摘要
随着飞机结冰问题研究的深入,混合相结冰问题已经成为研究热点。本文使用了阻力模型、黏附模型和结冰热力学模型来计算混合相结冰条件下的准三维多端翼的结冰情况。首先对多段翼进行了网格划分和空气流场计算。然后进行了数值模拟计算,分析了混合相结冰条件下冰晶的撞击、黏附和积冰特征。结果表明,在本研究的条件下,冰晶的黏附质量流量很高,会对飞行安全造成威胁,并且冰晶在溢流水区域也会发生黏附。此外,随着液态水含量(Liquid water content,LWC)与总水含量(Total water content,TWC)比值的升高,冰晶更容易黏附在表面并参与表面结冰。
The investigation of aircraft icing problems has led to a growing interest in mixed-phase icing.This paper used drag coefficient,adhesion,and icing thermodynamic models to calculate ice accretion on a quasi-threedimensional multi-element airfoil under mixed-phase conditions.Firstly,mesh generation and airflow field calculations are conducted on the multi-element airfoil.Next,numerical simulations are carried out to analyze the characteristics of ice crystals impingement,adhesion,and ice accretion under mixed phase conditions.The results show that the adhesion mass flow rate of ice crystals is high and can pose a threat to flight safety,and adhesion may also occur in the runback water zone.Moreover,with the increase of liquid water content(LWC)over total water content(TWC),ice crystals are more likely to adhere to surfaces and participate in surface icing.
作者
刘宗辉
卜雪琴
黄平
林贵平
王毓栋
LIU Zonghui;BU Xueqin;HUANG Ping;LIN Guiping;WANG Yudong(School of Aeronautic Science and Engineering,Beihang University,Beijing 100083,P.R.China;Hangzhou Innovation Institute,Beihang University,Hangzhou 311115,P.R.China)
基金
funded by the Na⁃tional Key R&D Program of China(No.2021YFB2601700)
the National Natural Science Foundation of China(No.52272428)
the National Science and Technology Major Project of China(No.J2019-Ⅲ-0010-0054)
the Fundatmental Research Funds for the Central Universities(No.YWF-23-SDHK-L-003).
关键词
多段翼
混合相结冰
撞击模型
黏附模型
结冰热力学模型
multi-element airfoil
mixed-phase icing
impact model
adhesion model
icing thermodynamic model
