Natural convection heat transfer analysis of nano-fluid in a F- shaped chamber

Subject Areas : Heat Transfer

Abdollah Khalesi Doost ¹ , Amir Yadolahi ²

1 - Energy and Sustainable Development Research Center, Semnan Branch, Islamic Azad University, Semnan, Iran
2 - Coauthore

Received: 2016-09-25 Accepted : 2016-11-19 Published : 2013-08-23

Keywords: magnetic field, Natural convection, Nano-fluid, SIMPLE algorithm,

Abstract :

In this study has been investigated the natural heat transfer for F-shaped geometry with laminar flow and under certain conditions. The top walls are isolated, and right wall has a hot boundary condition and left walls are cold. Momentum and energy equations written and SIMPLE algorithm was used to solve for the equations. For geometry modeling prepare a program in FORTRAN and for checking of accuracy of written code it was checked with one adapted articles. In this paper, the influence of factors such as Raily number, Hartman number, aspect ratio and the ratio of silver nano-particles on the heat transfer is investigated. The results show that by increasing the Raily number increases of heat transfer. The horizontal and vertical speed decreases with increasing aspect ratio compartment. Increasing Railey number will increase the effect of the influence of Hartmann number and heat transfer. By proportion of aspect ratio equal 0.4 that warm wall temperature too close to the cold wall, heat transfer was increased. Keywords