Calculation and Analysis of Runback Water Flow on Anti-Icing Airfoil Surface

A calculation method was developed to analyze the water-film flow on an anti-icing airfoil surface. The mathematical model for the mass and heat transfer of the water-film flow considered two regions: the runback water layer, and the external airflow boundary layer on the anti-icing surface. Both of the airflow boundary and water flow layers were subject to mass, momentum, and energy conservations. The thickness of the water-film flow was predicted. In the water droplet impinging area, the water flowed in the form of water film. Outside the water droplet impinging area, the water film became unstable and then broke up into individual rivulets due to the influence of the aerodynamic shear force and surface properties. The mathematical model of rivulets was presented and used to predict the shape of the rivulets on the airfoil surface. The calculations were compared to the experimental results. The characteristics of the runback water on the anti-icing surface were analyzed.

[1]  François Morency,et al.  Numerical Validation of Conjugate Heat Transfer Method for Anti-/De-Icing Piccolo System , 2014 .

[2]  François Morency,et al.  Heat and Mass Transfer in the Case of Anti-Icing System Simulation , 2000 .

[3]  Mohamed S. El-Genk,et al.  Minimum thickness of a flowing down liquid film on a vertical surface , 2001 .

[4]  D. W. Hammond,et al.  Ice and water film growth from incoming supercooled droplets , 1999 .

[5]  A. Rothmayer,et al.  Water film runback on an airfoil surface , 2000 .

[6]  A. Rothmayer.  Scaling Laws for Water and Ice Layers on Airfoils , 2003 .

[7]  Hui Hu,et al.  An experimental investigation on wind-driven rivulet/film flows over a NACA0012 airfoil by using digital image projection technique , 2014 .

[8]  G. F. Naterer,et al.  Coupled liquid film and solidified layer growth with impinging supercooled droplets and Joule heating , 2003 .

[9]  Hamid Hefazi,et al.  Dierential Boundary-Layer Analysis and Runback Water Flow Model Applied to Flow Around Airfoils with Thermal Anti-ice , 2009 .

[10]  François Morency,et al.  HOT AIR ANTI-ICING SYSTEM MODELIZATION IN THE ICE PREDICTION CODE CANICE , 1998 .

[11]  B. L. Messinger.  Equilibrium Temperature of an Unheated Icing Surface as a Function of Air Speed , 1953 .

[12]  Mohamed S. El-Genk,et al.  On the breakup of a thin liquid film subject to interfacial shear , 2004, Journal of Fluid Mechanics.

[13]  Kazem Hasanzadeh Lashkajani,et al.  Validation and Verification of Multi-Steps Icing Calculation Using CANICE2D-NS Code , 2013 .

[14]  Farooq Saeed,et al.  Surface Heat Transfer Study for Ice Accretion and Anti-Icing Prediction in Three Dimension , 2004 .

[15]  Guilherme Araujo Lima da Silva,et al.  Water Film Breakdown and Rivulets Formation Effects on Thermal Anti-ice Operation Simulation , 2006 .

[16]  Wagdi G. Habashi,et al.  Optimization via FENSAP-ICE of Aircraft Hot-Air Anti-Icing Systems , 2011 .

[17]  Mark G. Potapczuk,et al.  A Review of NASA Lewis' Development Plans for Computational Simulation of Aircraft Icing , 1999 .

[18]  M. Brahimi,et al.  Numerical simulation of ice accretion on multiple element configurations , 1996 .

[19]  Guilherme Araujo Lima da Silva,et al.  Numerical Simulation of Airfoil Thermal Anti-Ice Operation Part 1: Mathematical Modeling , 2007 .

[20]  R. J. Kind,et al.  Experimental and computational simulation of in-flight icing phenomena , 1998 .

[21]  Awatef Hamed,et al.  Numerical simulations of ice droplet trajectories and collection efficiency on aero - engine rotating machinery , 2005 .

[22]  Masoud Farzaneh,et al.  Linear stability analysis of ice growth under supercooled water film driven by a laminar airflow , 2011, 1103.3007.

[23]  Kenneth J. Witt,et al.  Development of an improved model for runback water on aircraft surfaces , 1994 .

[24]  Wagdi G. Habashi,et al.  Three-Dimensional Eulerian Approach to Droplet Impingement Simulation Using FENSAP-ICE, Part 1: Model, Algorithm, and Validation , 2000 .

[25]  Scott K. Thomas,et al.  Aircraft anti-icing and deicing techniques and modeling , 1996 .

[26]  David N. Anderson,et al.  Evaluation and Validation of the Messinger Freezing Fraction , 2003 .

[27]  Hui Hu,et al.  An experimental investigation on the surface water transport process over an airfoil by using a digital image projection technique , 2015 .

[28]  Robert P. Cassoni,et al.  Aircraft Anti-Icing and De-Icing Techniques and Modeling , 1996 .

[29]  Mohamed S. El-Genk,et al.  An Investigation of the Breakup of an Evaporating Liquid Film, Falling Down a Vertical, Uniformly Heated Wall , 2002 .

[30]  Zhixiang Zhou,et al.  Heat Transfer and Temperature Analysis of an Aeroengine Strut Under Icing Conditions , 2015 .

[31]  Alric P. Rothmayer,et al.  Stability of air flow past thin liquid films on airfoils , 1997 .

[32]  N. Dart.  Numerical Analysis of De-Icing Fluid Flow Off From Aircraft Wings , 2010 .

[33]  W. Dong,et al.  Numerical Simulation of Hot Air Anti-icing Charateristics of an Aero-engine Strut , 2015 .

[34]  T. Myers.  Extension to the Messinger Model for Aircraft Icing , 2001 .