Mixing mechanism of a discrete co-flow jet airfoil

Bertrand P.E. Dano; Alexis Lefebvre; Gecheng Zha

Mixing mechanism of a discrete co-flow jet airfoil

Bertrand P.E. Dano, Alexis Lefebvre, Gecheng Zha

Mechanical & Aerospace Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Scopus citations

Abstract

The flow mechanism leading to the enhanced performance of a discrete co-flow jet (dCFJ) airfoil is investigated. Flow visualization and DPIV are used to analyze the difference between the flow along discrete jets and over the tabs used for discretization of the slot jet. Results show that the entrainment is uniform over the leading jet as long as the tab size is small enough. The jets expand spanwise, inducing downward momentum toward the surface of the airfoil. Combined with the momentum increase due to the CFJ, the dCFJ is shown to dramatically increase lift up to 150% from the baseline airfoil and delay separation up to 10° angle of attack. More results and analysis will be presented in the final paper.

Original language	English (US)
Title of host publication	41st AIAA Fluid Dynamics Conference and Exhibit
State	Published - 2011
Event	41st AIAA Fluid Dynamics Conference and Exhibit 2011 - Honolulu, HI, United States Duration: Jun 27 2011 → Jun 30 2011

Publication series

Name	41st AIAA Fluid Dynamics Conference and Exhibit

Other

Other	41st AIAA Fluid Dynamics Conference and Exhibit 2011
Country	United States
City	Honolulu, HI
Period	6/27/11 → 6/30/11

ASJC Scopus subject areas

Fluid Flow and Transfer Processes
Energy Engineering and Power Technology
Aerospace Engineering
Mechanical Engineering

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Cite this

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title = "Mixing mechanism of a discrete co-flow jet airfoil",

abstract = "The flow mechanism leading to the enhanced performance of a discrete co-flow jet (dCFJ) airfoil is investigated. Flow visualization and DPIV are used to analyze the difference between the flow along discrete jets and over the tabs used for discretization of the slot jet. Results show that the entrainment is uniform over the leading jet as long as the tab size is small enough. The jets expand spanwise, inducing downward momentum toward the surface of the airfoil. Combined with the momentum increase due to the CFJ, the dCFJ is shown to dramatically increase lift up to 150% from the baseline airfoil and delay separation up to 10° angle of attack. More results and analysis will be presented in the final paper.",

author = "Dano, {Bertrand P.E.} and Alexis Lefebvre and Gecheng Zha",

year = "2011",

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isbn = "9781600869471",

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AU - Dano, Bertrand P.E.

AU - Lefebvre, Alexis

AU - Zha, Gecheng

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N2 - The flow mechanism leading to the enhanced performance of a discrete co-flow jet (dCFJ) airfoil is investigated. Flow visualization and DPIV are used to analyze the difference between the flow along discrete jets and over the tabs used for discretization of the slot jet. Results show that the entrainment is uniform over the leading jet as long as the tab size is small enough. The jets expand spanwise, inducing downward momentum toward the surface of the airfoil. Combined with the momentum increase due to the CFJ, the dCFJ is shown to dramatically increase lift up to 150% from the baseline airfoil and delay separation up to 10° angle of attack. More results and analysis will be presented in the final paper.

AB - The flow mechanism leading to the enhanced performance of a discrete co-flow jet (dCFJ) airfoil is investigated. Flow visualization and DPIV are used to analyze the difference between the flow along discrete jets and over the tabs used for discretization of the slot jet. Results show that the entrainment is uniform over the leading jet as long as the tab size is small enough. The jets expand spanwise, inducing downward momentum toward the surface of the airfoil. Combined with the momentum increase due to the CFJ, the dCFJ is shown to dramatically increase lift up to 150% from the baseline airfoil and delay separation up to 10° angle of attack. More results and analysis will be presented in the final paper.

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T2 - 41st AIAA Fluid Dynamics Conference and Exhibit 2011

Y2 - 27 June 2011 through 30 June 2011

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