Numerical investigations of injection slot size effect on the performance of co-flow jet airfoil

Baoyuan Wang, Bahaa Haddoukessouni, Jonathan Levy, Ge Cheng Zha

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

1 Scopus citations

Abstract

Three co-flow jet (CFJ) airfoils with injection slot size differed by two times consecutively are calculated by using a RANS CFD solver with 1-equation Spalart-Allmaras model. At the same angle of attack(AoA), the twice larger injection slot size airfoil passes about twice larger jet mass flow rate with the momentum coefficients also nearly doubled. The CFJ airfoil with the largest slot size has the least stall angle of attack(AoA). When the injection slot size is reduced by half, the stall AoA and the maximum lift coefficient is increased. However, when the injection slot size is further reduced by half, the stall AoA is still increased, but the maximum lift coefficient is lower due to the smaller momentum coefficient. The trend of the stall AoA and maximum lift agree with the experiment. At low AoA, both the computed lift and drag agree fairly well with the experiment. At high AoA, both the lift and drag are under-predicted. The reason may be that the RANS model can not handle the turbulence mixing well at high AoA.

Original languageEnglish (US)
Title of host publicationCollection of Technical Papers - 25th AIAA Applied Aerodynamics Conference, 2007
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
Pages1705-1719
Number of pages15
ISBN (Print)1563478986, 9781563478987
DOIs
StatePublished - Jan 1 2007
Event25th AIAA Applied Aerodynamics Conference, 2007 - Miami, FL, United States
Duration: Jun 25 2007Jun 28 2007

Publication series

NameCollection of Technical Papers - AIAA Applied Aerodynamics Conference
Volume3
ISSN (Print)1048-5953

Other

Other25th AIAA Applied Aerodynamics Conference, 2007
CountryUnited States
CityMiami, FL
Period6/25/076/28/07

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Wang, B., Haddoukessouni, B., Levy, J., & Zha, G. C. (2007). Numerical investigations of injection slot size effect on the performance of co-flow jet airfoil. In Collection of Technical Papers - 25th AIAA Applied Aerodynamics Conference, 2007 (pp. 1705-1719). (Collection of Technical Papers - AIAA Applied Aerodynamics Conference; Vol. 3). American Institute of Aeronautics and Astronautics Inc.. https://doi.org/10.2514/6.2007-4427