Share

Flow transitions and combined free and forced convective heat transfer in a rotating curved circular tube.

Author(s) : WANG L., CHENG K. C.

Type of article: Article

Summary

When the rotation is in the same direction as the main flow imposed by a pressure gradient and the fluid is heated, the flow and heat transfer remain similar to those observed in stationary curved tubes, radially rotating straight tubes or mixed convection in stationary straight tubes. There are, however, quantitative changes due to to the combined effects of centrifugal, Coriolis and buoyancy forces. A more complex behaviour is possible when the rotation is opposite to the flow due to the pressure gradient or when the fluid is cooled. In particular, the inward Coriolis force and/or buoyancy force may cause the direction of the secondary flow to reverse. The flow reversal occurs by passing through a four-cell vortex flow region where overall, the centrifugal, Coriolis and buoyancy forces just neutralize each other.

Details

  • Original title: Flow transitions and combined free and forced convective heat transfer in a rotating curved circular tube.
  • Record ID : 1997-1392
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 39 - n. 16
  • Publication date: 1996/11

Links


See other articles in this issue (3)
See the source

Indexing