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《Journal of Chongqing University of Technology(Natural Science)》 2015-11
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Influence of Flow Angle of Aole on Heat Transfer and Flow Characteristics of Lamilloy Configuration

YANG Lu-lu;LU Chao-yang;College of Civil Aviation,Nanjing University of Aeronautics and Astronautics;  
Five different lamilloy configurations model in which the flow angle of hole were changed were designed to conjugate simulate the flow and heat transfer characteristics with fluent software,and the results were analyzed by comparison. The results showed that when the cool air flow into the mainstream along the hole of flow,cool air and hot air mix stronger and turbulence kinetic energy increases along the way. Then the mixing gradually stabilizes,the turbulent kinetic energy decreases gradually.With the gradually increase of the flow angle of hole,the fluid on the both sides of the center line of the hole is sucked in continuous,and the fluid on the center line of the hole is squeezed out in contin-uous,which enhances cool air and hot air mixing and increases the proportion of mixing core area.With the gradually increase of the flow angle of hole,the temperature of cool air which is covered on the hot side surface increases gradually,and heat transfer are weakened and the temperature of hot side surface are increased gradually.
【CateGory Index】: TK124
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