Forced convection characteristics of non-Newtonian fluids over the tube banks have been studied numerically for the following governing parameters: solid volume fractions of the cylinders; = 0.20, 0.25 and 0.30, Reynolds number; Re= 1, 5 and 10; power-law index n= 0.8, 1 and 1.4 and at a fixed value of Prandtl number of Pr=1. The flow and thermal features such as streamlines, isotherm patterns, drag coefficients and mean or average Nusselt number etc. have been explored and found to be strongly dependent over the above parameters. The drag coefficients were seen to be increased with the increasing values of solid volume fractions and power-law index, whereas, an opposite behavior was noticed with increasing Reynolds number. Further, the mean Nusselt number were found to be enhanced with increasing values of Reynolds numbers and porosity, but a decrease was noticed with increasing value of power-law index. Overall, a non-monotonous behavior has been observed for both flow and heat transfer features of non-Newtonian fluids through the tube banks.
Porosity, Nusselt number, Power-law index, Drag coefficients, Cylinders
Er. R. P. Ram "Characteristics Of Non-Newtonian Fluids Over Tube Banks " Iconic Research And Engineering Journals Volume 1 Issue 5 2017 Page 23-28
Er. R. P. Ram "Characteristics Of Non-Newtonian Fluids Over Tube Banks " Iconic Research And Engineering Journals, 1(5)