ISSN Online: 2377-424X
ISBN Print: 0-85295-345-3
International Heat Transfer Conference 10
TRANSIENT LAMINAR FORCED CONVECTION HEAT TRANSFER WITH PERIODIC VARIATION OF INLET TEMPERATURE IN CIRCULAR DUCTS
Аннотация
This work present the results of a numerical analysis and experimental study of transient forced convection with laminar flow inside a circular duct, subjected to a periodically varying inlet temperature.
The transient energy equation is solved in the
thermal entrance region, under the first-kind
boundary condition. By utilizing a purely numerical
approach that combines a fully explicit, second-order
accurate finite difference scheme with a semi-empirical
relationship for the inlet temperature distribution, the thermal response of the fluid is obtained with prescribed accuracy, within the temperature field. For the cases considered, satisfactory agreement is obtained when the semi-analytical solutions of centerline temperature
amplitudes and decay indices are compared with the
experimental findings.