Comptes Rendus
Axial development of the mean flow in the entrance region of turbulent pipe and duct flows
Comptes Rendus. Mécanique, Volume 337 (2009) no. 8, pp. 573-584.

The present Note reports a detailed analysis of some of the specific flow properties which are associated with the development region of circular pipes and ducts of square or rectangular cross-sections in turbulent conditions. Indeed, there are no data presently available to determine a priori the acceleration effect which results from the progressive thickening of the boundary layers on the pipe walls. In addition, published results concerning the longitudinal extension of this development region are rather confusing. Through our study, on the one hand, the litigious points are clarified, and, on the other hand, the pertinent grouping of variables (which include the hydraulic diameter Dh and the boundary layer displacement thickness δ1) providing the parameter relevant for obtaining similarity between all the situations is displayed.

Received:
Accepted:
Published online:
DOI: 10.1016/j.crme.2009.07.001
Keywords: Turbulence, Pipe flows, Duct flows, Entrance region

Fabien Anselmet 1; Fabien Ternat 1, 2; Muriel Amielh 1; Olivier Boiron 1; Patrick Boyer 2; Laurence Pietri 1

1 IRPHE, CNRS – Aix Marseille Université – École Centrale Marseille, technopôle de Château-Gombert, 49 rue Joliot-Curie, B.P. 146, 13384 Marseille cedex 13, France
2 IRSN, CE Cadarache, bâtiment 159, 13108 St-Paul Lez Durance, France
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Fabien Anselmet; Fabien Ternat; Muriel Amielh; Olivier Boiron; Patrick Boyer; Laurence Pietri. Axial development of the mean flow in the entrance region of turbulent pipe and duct flows. Comptes Rendus. Mécanique, Volume 337 (2009) no. 8, pp. 573-584. doi : 10.1016/j.crme.2009.07.001. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2009.07.001/

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