Numerical simulation of nanofluid forced convection heat transfer over a horizontal cylinder by smooth particle hydrodynamics

Publish Year: 1396
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:

ICHMT03_245

تاریخ نمایه سازی: 7 اسفند 1396

Abstract:

Nano-fluidic flow and heat transfer around a horizontal cylinder at Reynolds numbers up to 250 is investigated by using weakly compressible smoothed particle hydrodynamics (WCSPH). To be able to simulate enhanced nano-particle heat transfer, this manuscript describes for the first time a development that allows conductive and convective heat transfer to be modelled accurately for the Eckert problem using WCSPH. The simulations have been conducted for Pr = 0.01 to 40 with nanoparticle volumetric concentrations ranging from 0% to 4%. The velocity fields and the Nusselt profiles from the present simulations are in a good agreement with the experimental measurements. The results show that WCSPH is appropriate method for such numerical modelling. Additionally, the results of heat transfer characteristics of nano-fluid flow over a cylinder marked improvements comparing with the base fluids. This improvement is more evident in flows with higher Reynolds numbers and higher particle volumeconcentration.

Keywords:

nanoparticles , nanofluid , smoothed particle hydrodynamics (SPH) , forced convection

Authors

h nasiri

Department of Mechanical Engineering, Daneshpajoohan Higher Education Institute, Isfahan, Iran

m.y.a jamalabadi

Department of Mechanical, Robotics and Energy Engineering, Dongguk University, Seoul ۰۴۶۲۰, Republic of Korea

r sadeghi

Department of Mechanical Engineering, McMaster University, Canada

m.s shadloo

CORIA-UMR ۶۶۱۴, Normandy University, CNRS-University & INSA of Rouen, ۷۶۰۰۰ Rouen, France