Detached eddy simulation of turbulent flow and heat transfer in a two-pass internal cooling duct

Viswanathan, Aroon K.; Tafti, Danesh K.

doi:10.1016/j.ijheatfluidflow.2005.07.002

Cited by 52 publications

(24 citation statements)

References 41 publications

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“…Additionally several studies by Vishwanathan and Tafti [112,115,117], Liu et al [56] and Kubacki et al [47] successfully implemented hybrid based methods to predict the turbulent and mean flow features in stationary, rotating and roughened ribbed ducts -all documenting reasonable success.…”

Section: Internal Cooling Ductsmentioning

confidence: 95%

See 1 more Smart Citation

A Review of Embedded Large Eddy Simulation for Internal Flows

Holgate

Skillen

Craft

et al. 2018

Arch Computat Methods Eng

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When scale-resolving simulation approaches are employed for the simulation of turbulent flow, computational cost can often be prohibitive. This is particularly true for internal wall-bounded flows, including flows of industrial relevances which may involve both high Reynolds number and geometrical complexity. Modelling the turbulence induced stresses (at all scales) has proven to lack requisite accuracy in many situations. In this work we review a promising family of approaches which aim to find a compromise between cost and accuracy; hybrid RANS-LES methods. We place particular emphasis on the emergence of embedded large eddy simulation. These approaches are summarised and key features relevant to internal flows are highlighted. A thorough review of the application of these methods to internal flows is given, where hybrid approaches have been shown to offer significant benefits to industrial CFD (relative to an empirical broadband modelling of turbulence). This paper concludes by providing a cost-analysis and a discussion about the emerging novel use-modalities for hybrid RANS-LES methods in industrial CFD, such as automated embedded simulation and multi-dimensional coupling.

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Section: Internal Cooling Ductsmentioning

confidence: 95%

“…Sewall and Tafti [82] conducted an LES study of a stationary two pass duct, with and without a rib in the bend, whilst Viswanathan et al [116] conducted the same simulation using a k À x based DES model. The former LES study required a grid resolution of 0.7 million cells greater Fig.…”

Section: Two-pass Cooling Ductmentioning

confidence: 99%

A Review of Embedded Large Eddy Simulation for Internal Flows

Holgate

Skillen

Craft

et al. 2018

Arch Computat Methods Eng

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show abstract

“…The predicted heat transfer is within 20 % of measurements. Viswanathan and Tafti (2006) make k-ω based DES type simulations for a 180 • bent duct populated with ribs, comparing with LES and measurements. An incompressible, 2nd order fractional step solver is used.…”

Section: Ribbed Passagesmentioning

confidence: 99%

Applications of Eddy Resolving Methods

Tucker

2014

Unsteady Computational Fluid Dynamics in Aeronautics

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“…Several other hybrid methods were proposed later, which solved for other two-equation turbulence models instead of the SA model in the RANS region with the characteristic turbulent length scales obtained from the model itself [7]. The hybrid RANS-LES models have been shown capable in simulating in a number of complex flows [8][9][10][11]. However, their application still requires the first grid point satisfy y + < 1 in the wall normal direction, though it relieves the resolution requirement in wall parallel directions.…”

Section: List Of Tablesmentioning

confidence: 99%