TY - EJOU
AU - Basit, Romana
AU - Li, Xinyang
AU - Huang, Zheqing
AU - Zhou, Qiang
TI - Effect of Particle Orientation on Heat Transfer in Arrays of Prolate Particles
T2 - Computer Modeling in Engineering \& Sciences
PY - 2023
VL - 136
IS - 2
SN - 1526-1506
AB - Direct Numerical Simulations have been carried out to study the forced convection heat transfer of flow through
fixed prolate particles for a variety of aspect ratios *ar* = {5/4, 5/3, 5/1} with Reynolds number (Re) up to 100. Three
variations of the solid volume fraction *c* = {0.1, 0.2, 0.3} with four Hermans orientation factors *S* = {−0.5, 0, 0.5,
1} are studied. It has been found that changes in S cause prominent variations in the Nusselt number. In general,
Nusselt number increases with the decrease of *S*. For all three aspect ratios, the Nusselt number remains a linear
function of *S* at different c and Re. Therefore, it is concluded that, for heat transfer from prolate muti-particle
system, the effects of orientations cannot be ignored. A new correlation for Nusselt number has been developed for
arrays of prolate particles using the simulation data as a function of Re, *c*, *S* and *ar*.
KW - Direct Numerical Simulation; heat transfer; lattice Boltzmann method; particle orientations; prolate particles
DO - 10.32604/cmes.2023.025308