TY - JOUR
TI - Numerical investigation into natural convection heat transfer enhancement of copper-water nanofluid in a wavy wall enclosure
AU - Cho Ching-Chang
AU - Yau Her-Terng
AU - Chen Cha'o-Kuang
JN - Thermal Science
PY - 2012
VL - 16
IS - 5
SP - 1309
EP - 1316
PT - Article
AB - Numerical investigations are performed into the natural convection heat  transfer characteristics within a wavy-wall enclosure filled with Cu-water  nanofluid. In the paper, the bottom wall of the enclosure has a wavy geometry  and is maintained at a constant high temperature, while the top wall is  straight and is maintained at a constant low temperature. The left and right  walls of the enclosure are both straight and insulated. In performing the  simulation, the Boussinesq approximation is used to model the governing  equations. The study examines the effect of the nanoparticle volume fraction,  the Rayleigh number, the wave amplitude, and the wavelength on the heat  transfer characteristics. It is shown that the heat transfer performance can  be enhanced as the volume fraction of nanoparticles increases. It is also  shown that for a given Rayleigh number, the heat transfer effect can be  optimized via an appropriate changing of the geometry conditions.