Author/Authors :
ABBASIAN، S. A. نويسنده , , Sheikhzadeh، G. A نويسنده , , Heidary، R نويسنده Department of Mechanical Engineering, University of Kashan,Ghotb Ravandi Blvd, Kashan, 87317-51167, Iran , , Hajialigol، N نويسنده Department of Mechanical Engineering, University of Kashan,Ghotb Ravandi Blvd, Kashan, 87317-51167, Iran. , , Ebrahim-Qomi، M نويسنده Department of Mechanical Engineering, University of Kashan,Ghotb Ravandi Blvd, Kashan, 87317-51167, Iran. ,
Abstract :
In the present study, mixed convection laminar flow around an
adiabatic body in a Lid-driven enclosure filled with nanofluid using
variable thermal conductivity and variable viscosity is numerically
investigated. The fluid around the body in the enclosure is a water-based nanofluid containing Al
2 O 3
nanoparticles. The Vertical
enclosure’s walls are maintained at constant cold temperature and the
horizontal bottom enclosure’s wall is kept constant at hot temperature.
Top enclosure’s wall is insulated and moving with uniform velocity.
The ratio of body’s length to enclosure’s length is kept constant at 1/3.
The study has been carried out for the Richardson number of 0.01 to
100, the solid volume fraction of 0 to 0.06 and the Grashof number of
10
4
. Various results for the streamlines and isotherms as well as the
local and average Nusselt numbers are presented. By the use of
variable properties in this study Interesting results are observed.
