DNS of turbulent spot developing into turbulent stripe in plane poiseuille flow

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2 Citations (Scopus)

Abstract

A structure consisting of quasi-laminar and turbulent regions in a stripe pattern, which can be found in a transitional plane channel flow, is called 'turbulent stripe'. In this work, its formation from a turbulent spot has been investigated using a direct numerical simulation in a relatively large-scale computational domain of Lx ×Ly ×Lz = 731.4δ×2δ×365.7δ. We found that a spot developed into the turbulent stripes, as the spot split in the spanwise direction and took in the form of V-shape. Quasi-laminar and turbulent regions coexist inside the spot and each region became multiple V-shape. Several branching turbulent regions expanded from the edge of the spot and parallel to each other obliquely to the streamwise direction with an angle of about 30°. It was also found that the branching turbulent region gave rise to oblique waves at their edges.

Original languageEnglish
Title of host publicationASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting Collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels, FEDSM2010
Pages2125-2130
Number of pages6
EditionPARTS A, B AND C
DOIs
Publication statusPublished - 1 Dec 2010
EventASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting, FEDSM 2010 Collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels - Montreal, QC, Canada
Duration: 1 Aug 20105 Aug 2010

Publication series

NameAmerican Society of Mechanical Engineers, Fluids Engineering Division (Publication) FEDSM
NumberPARTS A, B AND C
Volume1
ISSN (Print)0888-8116

Conference

ConferenceASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting, FEDSM 2010 Collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels
CountryCanada
CityMontreal, QC
Period1/08/105/08/10

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Aida, H., Tsukahara, T., & Kawaguchi, Y. (2010). DNS of turbulent spot developing into turbulent stripe in plane poiseuille flow. In ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting Collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels, FEDSM2010 (PARTS A, B AND C ed., pp. 2125-2130). (American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FEDSM; Vol. 1, No. PARTS A, B AND C). https://doi.org/10.1115/FEDSM-ICNMM2010-30956