TY - JOUR
T1 - A spongy icing model for aircraft icing
AU - Li, Xin
AU - Bai, Junqiang
AU - Hua, Jun
AU - Wang, Kun
AU - Zhang, Yang
PY - 2014/2
Y1 - 2014/2
N2 - Researches have indicated that impinging droplets can be entrapped as liquid in the ice matrix and the temperature of accreting ice surface is below the freezing point. When liquid entrapment by ice matrix happens, this kind of ice is called spongy ice. A new spongy icing model for the ice accretion problem on airfoil or aircraft has been developed to account for entrapped liquid within accreted ice and to improve the determination of the surface temperature when entering clouds with supercooled droplets. Different with conventional icing model, this model identifies icing conditions in four regimes: rime, spongy without water film, spongy with water film and glaze. By using the Eulerian method based on two-phase flow theory, the impinging droplet flow was investigated numerically. The accuracy of the Eulerian method for computing the water collection efficiency was assessed, and icing shapes and surface temperature distributions predicted with this spongy icing model agree with experimental results well.
AB - Researches have indicated that impinging droplets can be entrapped as liquid in the ice matrix and the temperature of accreting ice surface is below the freezing point. When liquid entrapment by ice matrix happens, this kind of ice is called spongy ice. A new spongy icing model for the ice accretion problem on airfoil or aircraft has been developed to account for entrapped liquid within accreted ice and to improve the determination of the surface temperature when entering clouds with supercooled droplets. Different with conventional icing model, this model identifies icing conditions in four regimes: rime, spongy without water film, spongy with water film and glaze. By using the Eulerian method based on two-phase flow theory, the impinging droplet flow was investigated numerically. The accuracy of the Eulerian method for computing the water collection efficiency was assessed, and icing shapes and surface temperature distributions predicted with this spongy icing model agree with experimental results well.
KW - Aircraft aerodynamics
KW - Ice accretion
KW - Icing model
KW - Numerical simulation
KW - Spongy ice
UR - http://www.scopus.com/inward/record.url?scp=84894465891&partnerID=8YFLogxK
U2 - 10.1016/j.cja.2013.12.004
DO - 10.1016/j.cja.2013.12.004
M3 - 文章
AN - SCOPUS:84894465891
SN - 1000-9361
VL - 27
SP - 40
EP - 51
JO - Chinese Journal of Aeronautics
JF - Chinese Journal of Aeronautics
IS - 1
ER -