Hybrid RANS/LES computations of plane impinging jets with DES and PANS models

Kubacki, Sławomir; Rokicki, Jacek; Dick, Erik

doi:10.1016/j.ijheatfluidflow.2013.08.014

Cited by 31 publications

(17 citation statements)

References 20 publications

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“…(7), (8) and (9). The most recent version of PANS [25,26] uses relation (49) between r and the grid step, such as it is H-equivalent to PITM in the equilibrium layers considered in section 3.2 and only differ by the diffusion coefficients in inhomogeneous flows. In the PITM approach, the fundamental parameter is thus the ratio of modeled energy k M to total energy k defined by Eq.…”

Section: Description Of the Hybrid Methodsmentioning

confidence: 99%

Toward an equivalence criterion for Hybrid RANS/LES methods

2015

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A criterion is established to assess the equivalence between hybrid RANS/LES methods, called H-equivalence, based on the modeled energy of the unresolved scales, which leads to similar low-order statistics of the resolved motion. Different equilibrium conditions are considered, and perturbation analyses about the equilibrium states are performed. The procedure is applied to demonstrate the equivalence between two particular hybrid methods, and leads to relationships between hybrid method parameters that control the partitioning of energy between the resolved and unresolved scales of motion. This equivalence is validated by numerical results obtained for the cases of plane and periodically constricted channel flows. This concept of H-equivalence makes it possible to view different hybrid methods as models for the same system of equations: as a consequence, detached-eddy simulation (DES), which is shown to be H-equivalent to the temporal partially integrated transport model (T-PITM) in inhomogeneous, stationary situations, can be interpreted as a model for the subfilter stress involved in the temporally filtered Navier-Stokes equations.

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Section: Description Of the Hybrid Methodsmentioning

confidence: 99%

Toward an equivalence criterion for Hybrid RANS/LES methods

2015

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“…Kubacki et al [69] studied the capability of hybrid RANS/LES computations of jet impingement with Detached Eddy Simulation (DES) and Partially-Averaged Naiver Stokes (PANS) model for two configurations, i.e., H/B = 10, Re = 13500 and H/B = 4, Re = 20000. They considered the outflow boundary condition at X = +40B, periodic boundary condition in the span-wise direction (width equal to π) and turbulent length scale as 0.1667B.…”

Section: Dns and Hybrid Approachesmentioning

confidence: 99%

“…Further, some hybrid models are needed that can predict the fluid flow and heat transfer characteristics within the acceptable accuracy limits [73]. Recently some authors [67][68][69] have used hybrid models, such as, PANS, DES, etc., and concluded that these models provide reasonably accurate result and were found to be less computationally expensive than LES and DNS. Hence some of hybrid models, such as, PANS and DES, may be used to obtain a suitable compromise between the accuracy and cost of solution.…”

Section: Important Reviews On Jet Impingement Heat Transfermentioning

confidence: 99%

“…The turbulent length scale at the inlet was set as 0.015B.  Kubacki et al [69] considered the outflow boundary condition at X = +40B, periodic boundary condition in the span-wise direction (width equal to π) and turbulent length scale as 0.1667B. An extremely small number of studies dealing with jet impingement heat transfer on a ribbed surface either experimentally or numerically have been reported.…”

Section: Computational Domain and Boundary Conditionsmentioning

confidence: 99%

“…Some researchers have used the PANS approach for impinging jet computations [68,69] which employs unsteady, filtered governing equations. The PANS equations [85] vary smoothly from RANS equations to Navier-Stokes equations (direct numerical simulation), depending on the values of the filter-width control parameters, and .…”

Section: Partially-averaged Navier-stokes (Pans) Modelingmentioning

confidence: 99%

See 2 more Smart Citations

Flow and thermal characteristics of jet impingement: comprehensive review

Shukla¹,

Dewan²

2017

IJHT

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A comprehensive review on jet impingement heat transfer is presented to consider the state-of the art in this field. Among all the single-phase heat transfer arrangements possible, it has the maximum heat transfer rate. A number of arrangements are possible to represent a practical or physical situation, such as, jet impingement on a solid flat surface or surface fitted with different kinds of turbulent promoters, inclined plane surface and cylindrical convex/concave surface, etc. A significant number of papers dealing with experimental and computational studies on different physical and computational aspects of jet impinging flows are reviewed. Several parameters were found to influence the characteristics, such as, flow confinement, nozzle shape, jet to plate spacing and Reynolds number. An extremely small number of studies dealing with application based jet impingement heat transfer configurations (e.g., ribs fitted impingement plate, moving impingement plate, etc) experimentally and numerically have been reported in the literature. Various computational approaches, such as, RANS, LES, DNS and hybrid models, that are used to study the jet impingement heat transfer, with their complexities and boundary conditions, have been reviewed. It was observed that majority of RANS based turbulence models did not predict impinging flows accurately and its complexities except a few. Many authors have reported that LES is capable of predicting the flow field and heat transfer data within the accepted accuracy limits. DNS can be applied to simple geometry with low Reynolds number. Recently some authors have employed hybrid models, such as, PANS, DES, etc., and concluded that these models provide reasonably accurate results and were found to be computationally less expensive than LES and DNS.

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OpenFOAM based LES of slot jet impingement heat transfer at low nozzle to plate spacing using four SGS models

Shukla

Dewan

2018

Heat Mass Transfer

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Hybrid RANS/LES computations of plane impinging jets with DES and PANS models

Cited by 31 publications

References 20 publications

Toward an equivalence criterion for Hybrid RANS/LES methods

Toward an equivalence criterion for Hybrid RANS/LES methods

Flow and thermal characteristics of jet impingement: comprehensive review

OpenFOAM based LES of slot jet impingement heat transfer at low nozzle to plate spacing using four SGS models

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