NATURAL-CONVECTION TO HORIZONTAL WIRES - THE CONDUCTION LIMIT

Free convection measurements were carried out from horizontal platinum wires of 0.0254, 0.0508 and 0.0826 cm in diameter, all 10.2 cm in length, to a 2500 wppm aqueous Carbopol 960 solution. For this highly viscous fluid there was no evidence of fluid motion and the measured fluid temperature distribution and heat transfer rates were in good agreement with the values predicted for pure conduction. Similar results were found for highly concentrated (5000 wppm) aqueous polyacrylamide solutions. © 1988