A model for enhanced heat transfer in an enclosure using Nano-aerosols

Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering

مقاله 15، دوره 9، شماره 2 - شماره پیاپی 26، آبان 2016، صفحه 309-326   

نوع مقاله: Persian

نویسندگان

Navid Ghajari^{* 1}؛ davood toghraie²؛ ahmad reza azimian³

¹Graduate, School of Mechanical Engineering, Islamic Azad University of Khomeini Shahr, Esfahan, Iran.

²Assistant Professor, Faculty of Mechanical Engineering, Islamic Azad University of Khomeini Shahr, Esfahan, Iran.

³Professor, Faculty of Mechanical Engineering, Islamic Azad University of Khomeini Shahr, Esfahan, Iran

چکیده

In this study, the behavior of nanoparticles using a numerical model is discussed. For this study a model for the expansion in free convection heat transfer and mix in a rectangular container with dimensions of 1 × 4 cm using Nano-aerosols in the air is going when copper nanoparticles, use and by changing the temperature difference between hot and cold wall, we will examine its impact on the rate of heat transfer. The simulation involves two-dimensional flow simulation and relaxed state of constant flux in free convection on the two lateral sides and on the top face of constant temperature (cold plate) at 300 K was considered And at low temperature (heat plate) in three modes 350, 400 and 450 K were compared. Temperature distribution, velocity, surface heat flux and Nusselt number during the course of our review.Finally, enhanced heat transfer in the presence of copper nanoparticles and changes in the temperature difference between warm and cold wall was observed

کلیدواژه‌ها

Nano-Particle؛ Aerosol؛ Convective heat transfer؛ Nano-fluid

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