سال انتشار: ۱۳۸۷

محل انتشار: دومین کنگره بین المللی علوم و فناوری نانو

تعداد صفحات: ۲

نویسنده(ها):

A Karimi Pour – Department of Mech. Eng,University of Sistan and Baluchestan, Zahedan, Iran
A.R Hossein Nezhad –
A Behzadmehr –
S Alikhani –

چکیده:

The effects of nanofluids on heat transfer and flow processes are investigated numerically inside a cavity which its left vertical side wall oscillates sinuously. The natural convection effect is sustained by subjecting the right wall to a higher temperature than the left wall. In addition, the two horizontal walls of the enclosure are kept insulated. A numerical model which uses the concept of solid volume fraction is implemented tostudy the effect of nanofluid on the problem. The transport equations are solved numerically with finite volume approach using SIMPLE algorithm. Computations are performed for Richardson number ranged from Ri = 0.1 to 1 and for Grashof number kept fixed at Gr = 104. It is found that both the Richardson number and the direction of the moving walls affect the fluid flow and heat transfer in the cavity. Copper– Water nanofluid is used with Pr = 6.2, and solid volume fraction is varied as 0.0% and 5%. It is observed that the heat transfer rate increases with increasing the nanoparticles volume fraction and it is enhanced at Ri < 1