Reynolds number effect on the turbulent separating flow in an asymmetric plane diffuser

Shinnosuke Obi, H. Nikaido, S. Masuda

Research output: Chapter in Book/Report/Conference proceedingChapter

2 Citations (Scopus)

Abstract

The velocity measurements in the turbulent separated flow in an asymmetric plane diffuser are presented. The flow field is particularly attractive to turbulence modelers because of the fully developed turbulent channel flow at the inlet plane, so that the ambiguity in specifying the inlet boundary condition is minimized, and the flow separation which occurs at the inclined wall due to adverse pressure gradient, providing challenges to all kinds of turbulence models including RANS and LES. The new data set covers lower Reynolds numbers than previous experiments, while retaining the inlet condition fully developed turbulent flow. The results show that the turbulent boundary layer on the diffuser wall does not detach from the wall, when Reynolds number at the diffuser inlet is sufficiently low. The results point to the existence of the critical Reynolds number in terms of the flow separation in the present flow configuration, although the influence of the side wall becomes remarkable.

Original languageEnglish
Title of host publicationProceedings of the 1999 3rd ASME/JSME Joint Fluids Engineering Conference, FEDSM'99, San Francisco, California, USA, 18-23 July 1999 (CD-ROM)
PublisherAmerican Society of Mechanical Engineers
Pages1
Number of pages1
ISBN (Print)0791819612
Publication statusPublished - 1999

Fingerprint

Diffusers (fluid)
turbulent flow
Reynolds number
Turbulent flow
Flow separation
turbulence
Channel flow
Pressure gradient
Turbulence models
Velocity measurement
turbulent boundary layer
Flow fields
Boundary layers
channel flow
Turbulence
pressure gradient
Boundary conditions
flow field
boundary condition
effect

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Engineering(all)
  • Environmental Science(all)

Cite this

Obi, S., Nikaido, H., & Masuda, S. (1999). Reynolds number effect on the turbulent separating flow in an asymmetric plane diffuser. In Proceedings of the 1999 3rd ASME/JSME Joint Fluids Engineering Conference, FEDSM'99, San Francisco, California, USA, 18-23 July 1999 (CD-ROM) (pp. 1). American Society of Mechanical Engineers.

Reynolds number effect on the turbulent separating flow in an asymmetric plane diffuser. / Obi, Shinnosuke; Nikaido, H.; Masuda, S.

Proceedings of the 1999 3rd ASME/JSME Joint Fluids Engineering Conference, FEDSM'99, San Francisco, California, USA, 18-23 July 1999 (CD-ROM). American Society of Mechanical Engineers, 1999. p. 1.

Research output: Chapter in Book/Report/Conference proceedingChapter

Obi, S, Nikaido, H & Masuda, S 1999, Reynolds number effect on the turbulent separating flow in an asymmetric plane diffuser. in Proceedings of the 1999 3rd ASME/JSME Joint Fluids Engineering Conference, FEDSM'99, San Francisco, California, USA, 18-23 July 1999 (CD-ROM). American Society of Mechanical Engineers, pp. 1.
Obi S, Nikaido H, Masuda S. Reynolds number effect on the turbulent separating flow in an asymmetric plane diffuser. In Proceedings of the 1999 3rd ASME/JSME Joint Fluids Engineering Conference, FEDSM'99, San Francisco, California, USA, 18-23 July 1999 (CD-ROM). American Society of Mechanical Engineers. 1999. p. 1
Obi, Shinnosuke ; Nikaido, H. ; Masuda, S. / Reynolds number effect on the turbulent separating flow in an asymmetric plane diffuser. Proceedings of the 1999 3rd ASME/JSME Joint Fluids Engineering Conference, FEDSM'99, San Francisco, California, USA, 18-23 July 1999 (CD-ROM). American Society of Mechanical Engineers, 1999. pp. 1
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