Quadrant analysis of Couette-Poiseuille flows on the verge of separation

Zehuan Wu, Atsushi Sekimoto, Callum Atkinson, Julio Soria

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

Abstract

A numerical experiment using direct numerical simulation (DNS) of the particular Couette-Poiseuille (C-P) flow in which the pressure gradient dP/dx is adjusted to create zero mean skin friction on the stationary wall is conducted. The quadrant analysis of the Reynolds stress is performed based on data from the DNS with emphasis on the structures near the frictionless wall. Reynolds structures are motions of the Reynolds stress u0v0 and their structure is investigated by quadrant analysis which splits the values of Reynolds stress into four quadrants (Qs). A fully resolved case with Reynolds number equal to 2880 is used. The Reynolds number Re is defined using the velocity of the moving wall uwall, viscosity ν and the half channel height h. Statistical and geometric characters of the Qs structures are investigated and reported.

Original languageEnglish
Title of host publicationProceedings of the 21st Australasian Fluid Mechanics Conference, AFMC 2018
EditorsTimothy C.W. Lau, Richard M. Kelso
Place of PublicationPerth WA Australia
PublisherAustralasian Fluid Mechanics Society
Number of pages4
ISBN (Electronic)9780646597843
Publication statusPublished - 2018
EventAustralasian Fluid Mechanics Conference 2018 - Adelaide Convention Centre, Adelaide, Australia
Duration: 10 Dec 201813 Dec 2018
Conference number: 21st
https://aomevents.eventsair.com/QuickEventWebsitePortal/21st-australasian-fluid-mechanics-conference/afmc2018

Conference

ConferenceAustralasian Fluid Mechanics Conference 2018
Abbreviated titleAFMC 2018
CountryAustralia
CityAdelaide
Period10/12/1813/12/18
Internet address

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