شماره ركورد كنفرانس :
2906
عنوان مقاله :
INFLUENCE OF DIAMOND/OIL NANOFLUID ON NATURAL CONVECTION IN HEATED CYLINDRICAL ENCLOSURE
پديدآورندگان :
Hosseini Moghadam Mohammad Reza نويسنده , Javaherdeh K. نويسنده Department of Mechanical Engineering, University of Gilan
كليدواژه :
diamond/oil nanofluid , Natural convection heat transfer , Numerical Simulation , Grashof numbers
عنوان كنفرانس :
پنجمين همايش ملي مبدل هاي گرمايي
چكيده فارسي :
The objective of the present paper is to investigate diamond/oil nanofluid natural
convection in partially heated cylindrical enclosure numerically. For this purpose numerical
simulation if natural convection in partially heated cylindrical is carried out with pure oil and
diamond/oil nanofluid. Calculation is performed based on the finite volume technique for
three different Grashof numbers (104 Gr 105 ) and the volume fraction of 0.04 ( 0.04 ).
Results show that adding Nano diamond to pure oil not only changes the temperature field,
but also alters the flow field significantly. It is demonstrated that by adding Nano diamond to
the pure oil, thermal diffusion enhances to great extend which leads to the uniform radial
distribution of temperature throughout the nanofluid in comparison to the pure oil. Moreover,
thermal diffusion augmentation leads to the intensification of natural heat transfer and
increasing of Nusselt number. It is also concluded that Nano diamond increases the viscosity
of the nanofluid that results in the reduction of the vertical velocity especially at lower
Grashof numbers.
شماره مدرك كنفرانس :
3146559