Computational study of flow characteristics of thick and thin airfoil with implicit large-eddy simulation at low reynolds number

Ryoji Kojima, Taku Nonomura, Akira Oyama, Kozo Fujii

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

The flow fields around NACA0012 and NACA0002 at Reynolds number of 23, 000, and their aerodynamic characteristics are analyzed. Computations are conducted with implicit large-eddy simulation solver and Reynolds-averaged-Navier-Stokes solver. Around this Reynolds number, the flow over an airfoil separates, transits and reattaches, resulting in generation of a laminar separation bubble at angle of attack in the range of certain degrees. Over a NACA0012 airfoil a separation point moves toward its leading edge with increasing angle of attack, and a separated flow may transit to create a short bubble. On the other hand, over a NACA0002 airfoil a separation point is kept at its leading edge, and a separated flow may transit to create a long bubble. Moreover, there appears nonlinearity in lift curve for NACA0012 airfoil, but does not appear in that for NACA0002 in spite of existence of a laminar separation bubble.

Original languageEnglish
Title of host publicationASME-JSME-KSME 2011 Joint Fluids Engineering Conference, AJK 2011
Pages3485-3495
Number of pages11
EditionPARTS A, B, C, D
DOIs
Publication statusPublished - 2011 Dec 1
Externally publishedYes
EventASME-JSME-KSME 2011 Joint Fluids Engineering Conference, AJK 2011 - Hamamatsu, Japan
Duration: 2011 Jul 242011 Jul 29

Publication series

NameASME-JSME-KSME 2011 Joint Fluids Engineering Conference, AJK 2011
NumberPARTS A, B, C, D
Volume1

Other

OtherASME-JSME-KSME 2011 Joint Fluids Engineering Conference, AJK 2011
Country/TerritoryJapan
CityHamamatsu
Period11/7/2411/7/29

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

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