Author/Authors :
Afshar, H Department of Mechanical Engineering - East Tehran Branch, Islamic Azad University, Tehran, Iran , Shams, M Department of Mechanical Engineering - K. N. Toosi University of Technology, Tehran, Iran , Mousavi Nainian, S. M Department of Mechanical Engineering - West Tehran Branch, Islamic Azad University, Tehran, Iran , Ahmadi, G Department of Mechanical and Aeronautical Engineering - Clarkson University, Potsdam NY, USA
Abstract :
In this investigation, effects of dispersed Cu nanoparticles in water on heat transfer coefficients are studied
using Eulerian-Lagranigian approach. Nanoparticles disperse in the fluid due to drag, weight and Brownian
forces acting on them. A new particle search algorithm is used to trace the particles in every time step.
Thermal coupling between dispersed and carrier phases is done and also thermal and momentum interaction
between particles and solid walls are taken onto account to obtain velocity and temperature fields. The
specific heat of nanofluid is obtained using conventional models. The results show that regarding
thermophysical properties of particles and base fluid, and also other conditions like mass flow rate and
particle size, degradation or intensification of heat transfer coefficients can occur.
Keywords :
Two phase flow , Heat transfer , Nanofluid , Nanoparticle
