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ISSN Online: 2377-424X

ISBN Print: 1-56032-797-9

International Heat Transfer Conference 11
August, 23-28, 1998, Kyongju, Korea

DEVELOPING OF VELOCITY AND TEMPERATURE IN ENTRANCE PIPE FLOW FOR POWER LAW FLUIDS

Get access (open in a dialog) DOI: 10.1615/IHTC11.2350
pages 15-20

Аннотация

The simultaneous development of velocity and temperature fields for laminar pipe flow is considered. The fluid rheological behaviour is described by the power law model. The wall thermal boundary conditions are for wall heat flux linearly depending on the wall temperature; the constant wall temperature and heat flux cases are recovered. An approximate solution for the developing velocity and temperature field is derived by an integral approach: the related basic profiles allow to recover the asymptotic solutions close to the inlet and in the fully developed region. Results are presented and discussed in terms of velocity profiles, Fanning friction coefficient and Nusselt numbers for different fluid properties and thermal boundary conditions.