流体中速度场检测方案(粒子图像测速)
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Particle image velocimetry (PIV) experiments have been carried out to study the correlation between the high-
Reynolds number turbulent flow and wall heat transfer characteristics in a two-pass square channel with a smooth wall
and a 90 rib-roughened wall. Detailed averaged velocity distributions and turbulent kinetic energy for both the main
and the secondary flows are given for a representative Reynolds number (Re) of 30,000. The PIV measurement results
were compared with the heat transfer experimental data of Ekkad and Han [International Journal of Heat Mass
Transfer 40 (11) (1997) 2525–2537]. The result shows that the flow impingement is the primary factor for the two-pass
square channel heat transfer enhancement rather than the flow turbulence level itself. The characteristics of the secondary
flow,for example,vortex’s shape, strength,rotating-direction and positions, are closely correlated with the wall
heat transfer enhancements for both smooth and ribbed wall two-pass square channels. The rib-induced flow turbulence
increases the heat transfer mainly because of the enhanced local flow impingement near the rib.
北京欧兰科技发展有限公司为您提供《流体中速度场检测方案(粒子图像测速)》,该方案主要用于其他中速度场检测,参考标准《暂无》,《流体中速度场检测方案(粒子图像测速)》用到的仪器有自适应粒子成像测速场仪(PIV)、德国LaVision PIV/PLIF粒子成像测速场仪、Imager SX PIV相机。
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