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Numerical simulation of heat transfer and turbulent flow of water nanofluids copper oxide in rectangular microchannel with semi-attached rib:

机译:半附着肋矩形微通道中水纳米流体氧化铜传热与湍流的数值模拟:

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In this research, the effect of utilizing semi-attached rib on heat transfer and liquid turbulent flow of nanofluid water–copper oxide in three-dimensional rectangular microchannel has been investigated. The results of numerical examination of this study in comparison to those of smooth channel have also been evaluated. The range of Reynolds numbers is between 10,000 and 60,000 and the volume fraction of copper oxide nanoparticle in 0%, 2%, and 4% was examined. In this numerical simulation, the effects of the changes in parameters such as dimensions of semi-attached rib, volume fraction of the nanoparticle, and Reynolds number were considered. The results of this study showed that utilizing semi-attached rib in microchannel with a ratio of 0??R/W?≤?0.325 in producing stronger vortices, which causes better mixture in fluid layers, is weaker than that with tooth mode of R/W?=?0 ratio. However, the main advantage of using tooth with a ratio of 0??R/W?≤?0.325 in comparison to ordinary tooth is the increase ...
机译:在这项研究中,研究了利用半附着肋对三维矩形微通道中纳米流体水-铜氧化物的传热和液体湍流的影响。与平滑通道相比,本研究的数值检查结果也得到了评估。雷诺数的范围在10,000至60,000之间,并且检查了0%,2%和4%的氧化铜纳米粒子的体积分数。在该数值模拟中,考虑了参数变化的影响,例如半附着肋的尺寸,纳米颗粒的体积分数和雷诺数。研究结果表明,利用微通道中半附着肋的比例为0?<?R / W?≤?0.325来产生更强的涡流,这会导致流体层中更好的混合,但比使用齿模的方式更弱。 R /W≥0。但是,与普通牙齿相比,使用比率为0?<?R / W?≤?0.325的牙齿的主要优点是...

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