Fluid Flow and Heat Transfer of Nanofluids over a Flat Plate with Conjugate Heat Transfer

Publish Year: 1393
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:

JR_CHAL-2-2_003

تاریخ نمایه سازی: 2 مرداد 1401

Abstract:

The falling and settling of solid particles in gases and liquids is a natural phenomenon happens in many industrial processes. This phenomenon has altered pure forced convection to a combination of heat conduction and heat convection in a flow over a plate. In this paper, the coupling of conduction (inside the plate) and forced convection of a non-homogeneous nanofluid flow (over a flat plate) is investigated, which is classified in conjugate heat transfer problems. Two-component four-equation non-homogeneous equilibrium model for convective transport in nanofluids has been applied that incorporates the effects of nanoparticle migration due to the thermophoresis Nt, Brownian motion Nb, and Lewis number Le   simultaneously. Employing similarity variables, we have transformed the basic non-dimensional partial differential equations to ordinary differential ones and then solved numerically. Moreover, variation of the heat transfer and concentration rates with thermal resistance of the plate   is studied in detail. Setting the lowest dependency of heat transfer rate to the thermal resistance of the plate as a goal, we have shown that for two nanofluids with similar heat transfer characteristics, the one with higher Brownian motion is desired.

Authors

A. Malvandi

Young Researchers and Elite Club, Karaj Branch, Islamic Azad University, Karaj, I.R. Iran

F. Hedayati

Mechanical Engineering Department, Islamic Azad University, Sari Branch, Sari, I.R.Iran

D.D. Ganji

Mechanical Engineering Department, Islamic Azad University, Sari Branch, Sari, I.R.Iran

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