The reynolds stress in channel flows from a lagrangian treatment of the turbulence momentum

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

Abstract

We have developed a mechanistic approach for determination of the Reynolds stress, using a Lagrangian analysis of turbulent momentum. Analysis and comparison with DNS and experimental data point toward the soundness of this approach (Lee, 2018). von Karman constant, the inner layer thickness and the Reynolds stress itself are all recovered through this approach, in agreement with DNS data. In addition, the turbulent flow profiles can be calculated iteratively using the basic Reynolds-averaged Navier-Stokes equation, in conjunction with the current transport equation for the Reynolds stress. In this work, we explore these and further uses of the current approach in solving turbulent flow dynamics.

Original languageEnglish (US)
Title of host publicationFluid Mechanics
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791859025
DOIs
StatePublished - Jan 1 2019
Externally publishedYes
EventASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference, AJKFluids 2019 - San Francisco, United States
Duration: Jul 28 2019Aug 1 2019

Publication series

NameASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference, AJKFluids 2019
Volume1

Conference

ConferenceASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference, AJKFluids 2019
CountryUnited States
CitySan Francisco
Period7/28/198/1/19

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ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

Cite this

Lee, T. W. (2019). The reynolds stress in channel flows from a lagrangian treatment of the turbulence momentum. In Fluid Mechanics (ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference, AJKFluids 2019; Vol. 1). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/AJKFLUIDS2019-5031