TY - GEN
T1 - Numerical investigations of co-flow jet airfoil with and without injection
AU - Zha, Ge Cheng
AU - Gao, Wei
AU - Paxton, Craig D.
AU - Palewicz, Alexis
N1 - Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2006
Y1 - 2006
N2 - The airfoil with injection only is compared with the CFJ airfoil with both injection and suction with the similar injection momentum coefficient. The CFD simulations indicate that the suction of the CFJ airfoil significantly enhances the mixing and energy transfer between the jet and main flow, which results in higher circulation, higher lift, higher stall angle of attack, lower drag, and lower energy expenditure. The equivalent drag of the airfoil with injection only is significantly higher than the drag of the CFJ airfoil with both injection and suction. Since any airfoil with a jet injection needs to have a jet suction to satisfy the mass conservation law, this study indicates that the suction occurring on the suction surface such as the CFJ airfoil is more beneficial than drawing the jet mass flow from the aircraft engine inlet.
AB - The airfoil with injection only is compared with the CFJ airfoil with both injection and suction with the similar injection momentum coefficient. The CFD simulations indicate that the suction of the CFJ airfoil significantly enhances the mixing and energy transfer between the jet and main flow, which results in higher circulation, higher lift, higher stall angle of attack, lower drag, and lower energy expenditure. The equivalent drag of the airfoil with injection only is significantly higher than the drag of the CFJ airfoil with both injection and suction. Since any airfoil with a jet injection needs to have a jet suction to satisfy the mass conservation law, this study indicates that the suction occurring on the suction surface such as the CFJ airfoil is more beneficial than drawing the jet mass flow from the aircraft engine inlet.
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M3 - Conference contribution
AN - SCOPUS:34250859493
SN - 1563478072
SN - 9781563478079
T3 - Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting
SP - 12743
EP - 12756
BT - Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting
T2 - 44th AIAA Aerospace Sciences Meeting 2006
Y2 - 9 January 2006 through 12 January 2006
ER -