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

J. R. Valentine, Rand Decker

Research output: Contribution to journalArticle

55 Citations (Scopus)

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 - 1995
Externally publishedYes

Fingerprint

airfoils
rain
Airfoils
Rain
airfoil profiles
raindrops
angle of attack
air flow
Angle of attack
boundary layers
Flow fields
Momentum
flow distribution
Boundary layers
momentum
Fluids
fluids
Air

Keywords

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

ASJC Scopus subject areas

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

Cite this

A Lagrangian-Eulerian scheme for flow around an airfoil in rain. / Valentine, J. R.; Decker, Rand.

In: International Journal of Multiphase Flow, Vol. 21, No. 4, 1995, p. 639-648.

Research output: Contribution to journalArticle

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