ISSN Online: 2377-424X
ISBN Print: 1-56032-797-9
International Heat Transfer Conference 11
FULLY DEVELOPED NON-NEWTONIAN FLUID FLOW AND HEAT TRANSFER IN A CONCENTRIC ANNULUS WITH AN AXIALLY MOVING CORE
Abstract
The fully developed laminar flow and heat transfer of a power-law non-Newtonian fluid in a concentric annulus with an axially moving core is studied analytically. Applying the shear stress described by the power-law model, the exact solutions for the momentum equation are obtained. With the resulting velocity distribution, the energy equation is solved numerically for the thermal boundary condition of a constant wall heat flux at one wall with the other insulated.
The effects of the relative core velocity, the radius ratio, and the flow index of a non-Newtonian power-law fluid on the velocity distribution and friction factor, and the temperature distribution and Nusselt numbers have been discussed.
The effects of the relative core velocity, the radius ratio, and the flow index of a non-Newtonian power-law fluid on the velocity distribution and friction factor, and the temperature distribution and Nusselt numbers have been discussed.