A new turbulence model for predicting fluid flow and heat transfer in separating and reattaching flows—I. Flow field calculations

doi:10.1016/0017-9310(94)90168-6

International Journal of Heat and Mass Transfer

Volume 37, Issue 1, January 1994, Pages 139-151

https://doi.org/10.1016/0017-9310(94)90168-6 Get rights and content

Abstract

To calculate complex turbulent flows with separation and heat transfer, we have developed a new turbulence model for flow field, which is modified from the latest low-Reynolds-number k−g3 model. The main improvement is achieved by the introduction of the Kolmogorov velocity scale, u_c &Z.tbnd; (vε)^$14$, instead of the friction velocity u_τ, to account for the near-wall and low-Reynolds-number effects in both attached and detached flows. The present model predicts quite successfully the separating and reattaching flows downstream of a backward-facing step, which involve most of the essential physics of complex turbulent flows, under various flow conditions. We have also discussed in detail the structure of the separating and reattaching flow based on the computational results, and presented several important features closely related to the mechanism of turbulent heat transfer.

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A new turbulence model for predicting fluid flow and heat transfer in separating and reattaching flows—I. Flow field calculations

Abstract

Int. J. Heat Mass Transfer

Int. J. Heat Mass Transfer

On the computation of convective heat transfer in complex turbulent flows

J. Heat Transfer

k—ε predictions of heat transfer in turbulent recirculating flows using an improved wall treatment

Numer. Heat Transfer B

Calculation of convective heat transfer in recirculating turbulent flow using various near-wall turbulence models

Numer. Heat Transfer A

Analytical methods for the development of Reynolds stress closures in turbulence

Ann. Rev. Fluid Mech.

Turbulent flow past a backward-lacing step: A critical evaluation of two-equation models

AIAA J.

A modified form of the k—ε model for predicting wall turbulence

J. Fluids Engng

An improvement of the k—ε turbulence model (the limiting behavior of wall and free turbulence, and the effect of adverse pressure gradient)

JSME J. Ser. B

An improved k−ε model for boundary layer flows

J. Fluids Engng

Numerical simulation of turbulent shear flow in an isothermal heat exchanger model

J. Fluids Engng

Improved form of the k—ε model for wall turbulent shear flows

J. Fluids Engng

Computation of turbulent flow over a backward-facing step Zonal approach

AIAA-88-0611

The collaborative testing of turbulence models

A buundary layer developing in an increasingly adverse pressure gradient

J. Fluid Mech.