The Numerical Simulation Of Ice Accretion On Airfoil And Control Research

Aircraft icing may be one of the causes that lead aircraft having serious accident, so the researchon aircraft icing has been concerned by more country. When the aircraft flying through the clouds, theclouds contain a lot of super-cooled water droplets will hit the aircraft surface, happen ice accretionphenomenon. Aircraft icing is a complicated heat and mass transfer phenomena, and it needs theknowledge of many fields, such as Aerodynamics Heat and Mass and Fluid Dynamic. China began tostudy this research relatively late, and it is lack of the experimental conditions. The design ofanti/deicing system mainly depends on engineering estimations with empirical data. This thesiscalculated by using the method of Fluid Dynamics of aircraft icing, and predicted the airfoil shape ofthe icing, analyzed to airfoil aerodynamic characteristics of influence, and finally using the activecontrol method, explore to designing the small thickness sheet controlled the ice shape.This thesis mainly research work includes the following aspects:(1) Introduce the aircraft icingphenomenon and of the major research methods at home and abroad, this thesis introduced thenumerical simulation of the development of the research aircraft icing.(2) The Roe finite volumescheme solving the two-dimensional Navier-Stokes equations, time for promoting the five-stageRunge-Kutta explicit scheme turbulence model for Spalat-Allmaras One-Equation;(3) Super-cooleddroplets impingement characteristics of airfoil were calculated based on the Lagrange method, anddiscussed effect on impingement characteristics of airfoil by airfoil speed MVD (medium volumetricdiameter）and LWC（liquid water content）.(4)A Messiger based icing model was established,including the roughness effect on heat transfer. Predicted the icing shape of NACA0012airfoil indifferent conditions. and the resulting influences of ice on airfoil were calculated.(5)Designing thesmall thickness sheet controlled the ice shape (6)Summarized the work, and puts forward thedirection of the research of the future work.