Investigating incipient separation for an aerofoil at an arbitrary orientation subjected to on oncoming gust

George Greenlee, Mohammed Afsar, Rohella Muhel

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Abstract

The purpose of this paper is to develop an efficient method for analysing the gust response of an aerofoil using CFD. The new method was then applied to investigate how varying the characteristics of a sinusoidal gust affects flow separation over a NACA0012 aerofoil. A two-dimensional periodic gust was implemented in ANSYS Fluent using the User-Defined Function tool. A specialised mesh was designed to allow for accurate modelling of a gust past a NACA0012 aerofoil. The features a rounded trailing edge and an O-grid structure with 164,000 cells. An incompressible SIMPLE pressure-based solver was used in ANSYS Fluent. The k-ωSST turbulence with low Reynold’s corrections was chosen due to its effectiveness in modelling pressure-induced flow separation. The velocity-inlet boundary was defined by the user-defined function velocity components with an angle of attack, α.
Original languageEnglish
Publication statusPublished - 28 May 2020
Event33rd Scottish Fluid Mechanics Meeting - Heriot Watt University, Edinburgh, United Kingdom
Duration: 28 May 202028 May 2020
https://sfmm2020.hw.ac.uk/programme/).

Conference

Conference33rd Scottish Fluid Mechanics Meeting
CountryUnited Kingdom
CityEdinburgh
Period28/05/2028/05/20
Internet address

Keywords

  • rapid-distortion theory
  • leading-edge scattering
  • receptivity
  • RDT
  • sinusoidal gusts
  • flow separation

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    Greenlee, G., Afsar, M., & Muhel, R. (2020). Investigating incipient separation for an aerofoil at an arbitrary orientation subjected to on oncoming gust. Paper presented at 33rd Scottish Fluid Mechanics Meeting , Edinburgh, United Kingdom.