Free and Forced Convective Heat Transfer through a Nanofluid with Two Dimensions past Stretching Vertical Plate

Q3 Engineering
B. Sailaja, G. Srinivas, B. Babu
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引用次数: 2

Abstract

The present study focus on both free and forced convective heat transfer through a nanofluid in two dimensions past stretching vertical plate. This free and forced convective heat transfer in Cu–water Nanofluid past permeable flat vertical semi-infinite plate was due to high conductivity and its occurrence. In this paper magnetic field and also heat source were considered. In graphs the effect on various parameters such as Reynolds number (Re) , solid volume fraction (φ), magnetic field parameter (M), inclination angle of the plate (γ ), heat source parameter (Qh), on linear velocity (U), vertical velocity (V) and temperature (θ) were exhibited. The profile of every governing parameter is displayed for natural as well as forced convection by considering the Ar >> 1 and Ar << 1 respectively. This rate of heat transfer in forced convection is more than equivalent in free convection. So these problems have several applications in engineering and petroleum industries such as electroplating, chemical processing of heavy metals and solar water heaters. Inertial force reducing the heat transfer rate in natural convection but the enhancement of Nu observed in forced convection. The composition of metal particles enhances the heat transfer rate in both convections, which emphasizes the nanofluid significance. Lorentz force is enhancing the heat transfer rate slightly. Heat source obviously increase the rate of heat transfer in both convections. The present paper aims to study the convective high temperature transfer of nanofluids into which viscosity proposed by Einstein and thermal conductivity proposed by Corcione were used.
二维纳米流体通过拉伸垂直板的自由和强迫对流传热
本研究的重点是通过拉伸垂直板的二维纳米流体的自由和强制对流传热。铜-水纳米流体通过可渗透的扁平垂直半无限平板时的这种自由和强制对流传热是由于高导电性及其产生的。本文考虑了磁场和热源。图中显示了雷诺数(Re)、固体体积分数(φ)、磁场参数(M)、板倾角(γ)、热源参数(Qh)等参数对线速度(U)、垂直速度(V)和温度(θ)的影响。通过分别考虑Ar>>1和Ar<<1,显示了自然对流和强迫对流的每个控制参数的分布。强制对流中的这种传热速率比自由对流中的传热速率更大。因此,这些问题在工程和石油工业中有着广泛的应用,如电镀、重金属化学处理和太阳能热水器。惯性力降低了自然对流中的传热速率,但在强制对流中观察到Nu的增强。金属颗粒的组成提高了两种对流中的传热率,这强调了纳米流体的重要性。洛伦兹力略微提高了传热速率。热源明显提高了两种对流的传热速率。本文旨在研究使用爱因斯坦提出的粘度和Corcione提出的热导率的纳米流体的对流高温转移。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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