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EnglishThe values of the fully developed Nusselt number for laminar forced convection in a circular tube with axial conduction in the fluid and exponential wall heat flux are determined analytically. Moreover, the distinction between the concepts of bulk temperature and mixing-cup temperature, at low values of the Peclet number, is pointed out. Finally it is shown that, if the Nusselt number is defined with respect to the mixing-cup temperature, then the boundary condition of exponentially varying wall heat flux includes as particular cases the boundary conditions of uniform wall temperature and of convection with an external fluid. © 1995 Springer-Verlag.
| Titolo: | On the laminar forced convection with axial conduction in a circular tube with exponential wall heat flux | |
| Autore/i: | Barletta A.; Zanchini E. | |
| Autore/i Unibo: | ||
| Anno: | 1995 | |
| Rivista: | ||
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1007/BF01463917 | |
| Abstract: | The values of the fully developed Nusselt number for laminar forced convection in a circular tube with axial conduction in the fluid and exponential wall heat flux are determined analytically. Moreover, the distinction between the concepts of bulk temperature and mixing-cup temperature, at low values of the Peclet number, is pointed out. Finally it is shown that, if the Nusselt number is defined with respect to the mixing-cup temperature, then the boundary condition of exponentially varying wall heat flux includes as particular cases the boundary conditions of uniform wall temperature and of convection with an external fluid. © 1995 Springer-Verlag. | |
| Data stato definitivo: | 2022-02-28T18:54:52Z | |
| Appare nelle tipologie: | 1.01 Articolo in rivista |
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