A Lagrangian-Eulerian scheme for flow around an airfoil in rain

J. R. Valentine, R. A. Decker

Research output: Contribution to journalArticle

57 Scopus citations

Abstract

In the interest of assessing airfoil performance in rain, a Lagrangian particle tracking algorithm for a general body-fitted co-ordinate system has been developed and linked with a thin layer incompressible Navier-Stokes code. Non-deforming spherical particles are tracked through the two-dimensional, incompressible air flow field surrounding a NACA 64-210 airfoil section. Each tracked particle represents a distribution of raindrops. Impacts on the airfoil surface and the resulting splashback are modeled, and the steady state fluid field and droplet distribution are determined utilizing an iterative, two-way momentum coupled approach. Details of the splashback effect on the boundary layer are examined. A 1-2° rain-induced decrease in stall angle of attack is predicted.

Original languageEnglish (US)
Pages (from-to)639-648
Number of pages10
JournalInternational Journal of Multiphase Flow
Volume21
Issue number4
DOIs
StatePublished - Aug 1995
Externally publishedYes

Keywords

  • Lagrangian simulation
  • airfoil in rain
  • body-fitted grid
  • particle tracking
  • two-phase flow

ASJC Scopus subject areas

  • Mechanical Engineering
  • Physics and Astronomy(all)
  • Fluid Flow and Transfer Processes

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