NUMERICAL INVESTIGATION OF THE INFLUENCE OF SURFACE ROUGHNESS ON CONVECTIVE HEAT TRANSFER AT AIRFOIL ICING PROCESS


  • A. A. Prykhodko Oles Honchar Dnipro National University, Gagarin ave., 72, Dnipro, 49010, Ukraine
  • S. V. Alekseyenko Oles Honchar Dnipro National University, Gagarin ave., 72, Dnipro, 49010, Ukraine
Keywords: airfoils icing, numerical simulation, surface roughness, convective heat transfer

Abstract

The technique of the processes of investigating of convective heat transfer determining in the problems of icing of aerodynamic surfaces on the basis of the solution of the Reynolds-averaged Navier- Stokes equations and the one-parameter Spalart-Allmaras turbulence differential model with correction for a rough wall is presented.

A methodology that allowed to simulate airfoils icing processes taking into account the ice surface roughness is presented. For the description of the external air-droplet flow a model of interpenetrating media was used. For the description of the ice growing process the method of surface control volumes using the methodology of determining the convective heat transfer based on the solution of the Navier-Stokes equations and the one-parameter differential Spalart-Allmaras turbulence model with a correction for a rough wall were used. Verification was performed by comparing the calculations results with the data obtained with the help of known semiempirical relationships. The proposed approach, unlike existing methods, will allow us to begin solving problems in a three-dimensional statement, with a rather complex geometry, in the presence of transonic regions in the airflow, and also to determine the aerodynamic characteristics of streamlined bodies with rough ice accretions. References 15, figures 3.

References

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Published
2018-06-20
How to Cite
Prykhodko, A. A., & Alekseyenko, S. V. (2018). NUMERICAL INVESTIGATION OF THE INFLUENCE OF SURFACE ROUGHNESS ON CONVECTIVE HEAT TRANSFER AT AIRFOIL ICING PROCESS. Thermophysics and Thermal Power Engineering, 40(2), 65-71. https://doi.org/https://doi.org/10.31472/ihe.2.2018.09
Section
Thermodynamics and Transport Phenomena