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首页> 外文期刊>Engineering Applications of Computational Fluid Mechanics >Numerical Study on Convective Heat Transfer of AL2O3/Water, CuO/Water and Cu/Water Nanofluids through Square Cross-Section Duct in Laminar Flow
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Numerical Study on Convective Heat Transfer of AL2O3/Water, CuO/Water and Cu/Water Nanofluids through Square Cross-Section Duct in Laminar Flow

机译：层流中方形截面管道对Al2O3 /水，CuO /水和Cu /水纳米流体对流传热的数值研究

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AbstractIn this paper the convective heat transfer of Al2O3/water, CuO/water and Cu/water nanofluids through a square cross-section duct in laminar flow with constant temperature boundary conditions is numerically investigated. Because of the size and volume constraints, it may be required to use square flow-passage geometries. A square cross section duct has the advantage of lower pressure drop, but it has a lower heat exchange rate than that of a circular duct. However, this study shows that this could be compensated by using nanofluids in these systems. A dispersion model was used to include the presence of nanoparticles. Results show that the Nusselt number was enhanced by increasing the concentration and decreasing the size of nanoparticles. Up to 77%, 68% and 59% enhancement in Nusselt number for Cu/water, CuO/water and Al2O3/water nanofluids at 4.0% vol of 10nm nanoparticles was achieved respectively.
机译：摘要本文研究了在恒定边界条件下层流中Al2O3 /水，CuO /水和Cu /水纳米流体在层流中的对流传热。由于尺寸和体积的限制，可能需要使用方形流道几何形状。方形横截面管道的优点是压降较低，但其热交换率低于圆形管道。但是，这项研究表明，可以通过在这些系统中使用纳米流体来弥补这一不足。分散模型用于包括纳米颗粒的存在。结果表明，通过增加纳米粒子的浓度和减小纳米粒子的尺寸，可以提高Nusselt数。以10％纳米粒子的体积计，Cu /水，CuO /水和Al2O3 /水纳米流体的努塞尔数分别提高了77％，68％和59％。

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