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Heat transfer in the entrance region with fully develped turbulent flow between parallel plates

Bo Leckner (Institutionen för energiomvandling)
International Journal of Heat and Mass Transfer (0017-9310). Vol. 15 (1972), p. 35-42.
[Artikel, refereegranskad vetenskaplig]

An analysis is made of local heat transfer in a thermal entrance region with a fully developed turbulent velocity profile for various Reynolds and Prandtl numbers. Difference methods are used to solve the energy equation. The velocity and eddy diffusivities are described by semi-empirical relationships. The geometrical picture is simple: flow between parallel plates, one of which is thermally insulated, the other transmits a known heat flux. Certain comparisons with calculations on laminar flow are made as a check on the reliability of the numerical method. This also provides an estimate of the influence of turbulence in the various cases and gives a possibility of judging the validity of approximations. Finally a comparison with available empirical expressions for fully developed heat transfer is shown

Nyckelord: Heat transfer; Entrance region; Liquid metal



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Denna post skapades 2016-06-23. Senast ändrad 2016-08-15.
CPL Pubid: 238166

 

Institutioner (Chalmers)

Institutionen för energiomvandling (1900-2003)

Ämnesområden

Energi
Termisk energiteknik

Chalmers infrastruktur