Large eddy simulation of film cooling over flat plate with 30° streamwise inclined cylinder hole was performed to investigate the turbulence field of film cooling.The Reynolds number at the jet exit was 2 600
and the blowing ratio was 0.5.Numerical results show that flow separation in the hole increases the turbulence kinetic energy and results in the decrease of film cooling effectiveness
which should be avoided as much as possible in design of coolant supply plenum.Eddy viscosity coefficient relevant to the lateral diffusion of film has peak on both sides of the hole
while the peak predicted by isotropic eddy viscosity model is in the shear layer between mainflow and jet.This results in the overprediction of vertical penetration and underprediction of lateral spread of the jet.Large eddy simulation can be used to construct anisotropic turbulence model in order to improve the accuracy of turbulence model.
Numerical simulation of heat transfer physics of film cooling under rotating conditions
Numerical investigation of film cooling with anisotropic turbulence model
Large eddy simulation of cryogenic jet under supercritical pressure based on OpenFOAM
Flow and heat transfer characteristics of round⁃hole film cooling with crater
Related Author
WU Hong
YANG Qing
LIU Ning
SUN Ji-ning
ZHU Jian-qin
XU Guo-qiang
SUN Ji-ning
DENG Hong-wu
Related Institution
National Key Laboratory of Science and Technology on Aero-Engine Aero-Thermodynamics,School of Energy and Power Engineering,Beijing University of Aeronautics and Astronautics
National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics,School of Jet Propulsion, Beijing University of Aeronautics and Astronautics
National Key Laboratory of Science and Technology on Aero-Engines, School of Jet Propulsion, Beijing University of Aeronautics and Astronautics
National Key Laboratory of Science and Technology on Liquid Rocket Engines,Xi'an Aerospace Propulsion Institute,China Aerospace Science and Technology Corporation
Academy of Aerospace Propulsion Technology,China Aerospace Science and Technology Corporation