NDLI: Turbulence Modeling Effects on the Prediction of Equilibrium States of Buoyant Shear Flows

Content Provider	Springer Nature Link
Author	Zhao, C.Y. So, R.M.C. Gatski, T.B.
Copyright Year	2001
Abstract	The effects of turbulence modeling on the prediction of equilibrium states of turbulent buoyant shear flows were investigated. The velocity field models used include a two-equation closure, a Reynolds-stress closure assuming two different pressure-strain models and three different dissipation rate tensor models. As for the thermal field closure models, two different pressure-scrambling models and nine different temperature variance dissipation rate ɛτ) equations were considered. The emphasis of this paper is focused on the effects of the ɛτ-equation, of the dissipation rate models, of the pressure-strain models and of the pressure-scrambling models on the prediction of the approach to equilibrium turbulence. Equilibrium turbulence is defined by the time rate of change of the scaled Reynolds stress anisotropic tensor and heat flux vector becoming zero. These conditions lead to the equilibrium state parameters, given by $\tilde{P} /ɛ, $ \tilde{P} τ/ɛτ, $R \overline{\theta^2}/2 \varepsilon_{\theta}/(k/\varepsilon)$ , Sk/ɛ and G/ɛ, becoming constant. Here, $\tilde{P} and $ \tilde{P} τ are the production of turbulent kinetic energy k and temperature variance \overline{\theta^2} , respectively, ɛ and ɛτ are their respective dissipation rates, R is the mixed time scale ratio, G is the buoyant production of k and S is the mean shear gradient. Calculations show that the ɛτ-equation has a significant effect on the prediction of the approach to equilibrium turbulence. For a particular ɛτ-equation, all velocity closure models considered give an equilibrium state if anisotropic dissipation is accounted for in one form or another in the dissipation rate tensor or in the ɛ-equation. It is further found that the models considered for the pressure-strain tensor and the pressure-scrambling vector have little or no effect on the prediction of the approach to equilibrium turbulence.
Starting Page	399
Ending Page	422
Page Count	24
File Format	PDF
ISSN	09354964
Journal	Theoretical and Computational Fluid Dynamics
Volume Number	14
Issue Number	6
e-ISSN	14322250
Language	English
Publisher	Springer-Verlag
Publisher Date	2001-07-01
Publisher Place	Berlin Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Fluid Flow and Transfer Processes Condensed Matter Physics Computational Mechanics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Turbulence Modeling Effects on the Prediction of Equilibrium States of Buoyant Shear Flows

A new framework for simulating forced homogeneous buoyant turbulent flows

Temporal Stability of Boundary-Free Shear Flows: The Effects of Diffusion

An explicit algebraic Reynolds stress and heat flux model for incompressible turbulence: Part II Buoyant flow

Analyzing the influence of compressibility on the rapid pressure–strain rate correlation in turbulent shear flows

On Low-Dimensional Modeling of Channel Turbulence

Constitutive equations for turbulent flows

On Pseudo Turbulence

Theoretical investigation of some thermal effects in turbulence modeling

Turbulence Modeling Effects on the Prediction of Equilibrium States of Buoyant Shear Flows

Similar Documents

Turbulence Modeling Effects on the Prediction of Equilibrium States of Buoyant Shear Flows

A new framework for simulating forced homogeneous buoyant turbulent flows

Temporal Stability of Boundary-Free Shear Flows: The Effects of Diffusion

An explicit algebraic Reynolds stress and heat flux model for incompressible turbulence: Part II Buoyant flow

Analyzing the influence of compressibility on the rapid pressure–strain rate correlation in turbulent shear flows

On Low-Dimensional Modeling of Channel Turbulence

Constitutive equations for turbulent flows

On Pseudo Turbulence

Theoretical investigation of some thermal effects in turbulence modeling

Turbulence Modeling Effects on the Prediction of Equilibrium States of Buoyant Shear Flows