Numerical Modeling of Turbulence Mixed Convection of Water and Drilling Mud inside a Square Enclosure by Various Turbulence Models

Message:
Abstract:
In the current study, after validating the accuracy of the current solution, mixed convection heat transfer in a square enclosure for drilling mudas a nonNewtonian Fluidand wateras a Newtonian fluid—is investigated by finite volume method. The turbulence methods used in this study are the reliable methods such as RNG, standard, and RSM. The outcome of the investigation implies that under natural convection conditions, velocity boundary layer is somewhat asymmetrical on the cold wall and the fluid at the center of enclosure remains stratified and still. The existing graphs also indicate that the turbulence intensity is higher for forced convection than natural convection. Also, the maximum turbulence intensity is greater for drilling mud than water. One of the most prominent outcomes to be named is that, under similar circumstances, the Nusselt number for water is far more than the one for drilling mud, which confirms that convection heat transfer is greater in the water than the drilling mud.
Language:
Persian
Published:
Petroleum Research, Volume:22 Issue: 70, 2012
Page:
85
https://www.magiran.com/p1056291