LES of a turbulent jet impinging on a heated wall using high-order numerical schemes

Dairay, Thibault; Fortuné, Véronique; Lamballais, Éric; Brizzi, Laurent-Emmanuel

doi:10.1016/j.ijheatfluidflow.2014.08.001

Cited by 66 publications

(49 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Many authors, such as, Cziesla et al [46], Uddin et al [47], Dutta et al [48], Dairay et al [49] and Dutta et al [50] observed that LES can predict the flow field and heat transfer data within the accepted accuracy limits. Development of LES wall functions for computation is quite important for impinging flows [1].…”

Section: Les and Boundary Conditionsmentioning

confidence: 99%

“…Uddin et al [47] performed LES using second order accurate schemes for space and time discretizations and observed that the flow acceleration in the developing zone of the boundary-layer was linked to the secondary peak observed in the radial distribution of Nu. Dairay et al [49] computed turbulent jet impinging on a heated wall with LES using higher order numerical scheme and performed DNS for Re = 10000 and H/D = 2. They used DNS results as a reference to compare two LES computations, one based on the hypothesis of conventional eddy viscosity and the other on high order numerical dissipation.…”

Section: Author(s) Configuration and Important Parameters Studied Summentioning

confidence: 99%

“…Many researchers have used LES for impinging jet computation [46][47][48][49][50]. Large eddy simulation (LES) is a computation in which the large eddies are computed and the effect of the smaller eddies, termed as the subgrid-scale (SGS), are modeled.…”

Section: Large Eddy Simulationmentioning

confidence: 99%

See 2 more Smart Citations

Flow and thermal characteristics of jet impingement: comprehensive review

Shukla¹,

Dewan²

2017

IJHT

View full text Add to dashboard Cite

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.

show abstract

Section: Les and Boundary Conditionsmentioning

confidence: 99%

Section: Author(s) Configuration and Important Parameters Studied Summentioning

confidence: 99%

See 1 more Smart Citation

Flow and thermal characteristics of jet impingement: comprehensive review

Shukla¹,

Dewan²

2017

IJHT

View full text Add to dashboard Cite

show abstract

“…Numerical studies on impinging jets have shown that traditional RANS models are incapable of predicting the main flow dynamics, and unsteady techniques such as LES or direct-numerical simulation (DNS) have been used instead providing better predictions [14,15]. LES studies on non-reacting impinging jets have been focused on the effects of subgrid scale modelling [14,16], inlet conditions or flow dynamics [13] and formation of vortical structures [12].…”

Section: Introductionmentioning

confidence: 99%

“…LES studies on non-reacting impinging jets have been focused on the effects of subgrid scale modelling [14,16], inlet conditions or flow dynamics [13] and formation of vortical structures [12]. In case of reacting flows, impinging flames have also been investigated in the literature.…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer Effects on a Fully Premixed Methane Impinging Flame

Mira

Zavala-Aké

Ávila

et al. 2016

Flow Turbulence Combust

View full text Add to dashboard Cite

A numerical assessment of different thermal conditions for an impinging flame configuration is investigated using large-eddy simulation. The cases of study correspond to a turbulent methane flame at equivalence ratio ER=0.8 and temperature T=298K exiting at 30 m/s with a nozzle-to-plate distance over diameter of H/D = 2. Computational cases based on different thermal conditions are compared to a conjugate case, in which fluid and solid domains are solved simultaneously. A solid material defined with enhanced conductivity properties is used to represent the wall in the conjugate case, so that the characteristic time scales of the solid are reduced. The results indicate that the heat transfer condition influences not only the mean temperature and gradients, but also the temperature fluctuations in the near-wall region. It is found that adiabatic, isothermal and more sophisticated Robin-type boundary conditions contribute to underpredict/overpredict the temperature field near the wall. As the time scales of fluid and solid are of the same order, the use of conjugate approaches is required to predict the correct flow fields near the wall and the skin temperature.

show abstract

Horizontal meandering in direct numerical simulations of the stable boundary layer

Stefanello

Frantz

Acevedo

et al. 2022

Quart J Royal Meteoro Soc

View full text Add to dashboard Cite

Large‐scale nonturbulent motions are investigated using high‐resolution direct numerical simulations of the turbulent Ekman layer at a moderate Reynolds number. In particular, the role of stable stratification effects in the generation and amplification of large‐scale oscillations in the wind‐speed components and buoyancy is analysed. Eulerian autocorrelation functions (EAFs) and spectral analysis help to describe and characterize such modes as meandering‐like structures. Focus is given to the strong stability cases, where vertical turbulent motions are damped and large‐scale modes drive near‐wall patterns of flow laminarization. Horizontal meandering arises in the near‐wall region when the ratio of vertical wind‐speed variance to horizontal wind‐speed variance decreases to small orders of magnitude. In the case of strong stratification, the characteristic features of meandering motion were identified as negative lobes in the EAF, with corresponding low‐frequency peaks in the horizontal wind speed and buoyancy spectra. The Ekman configuration used reproduced the development of meandering‐like structures satisfactorily in strong stable conditions, as indicated by field observations of the stable boundary layer and its dependence on the level of stratification. At strong stability, the Rotta model constant, which represents the relationship between the dissipation and return to isotropy terms in the velocity variance budget, is shown to vary with stability.

show abstract

LES of a turbulent jet impinging on a heated wall using high-order numerical schemes

Cited by 66 publications

References 30 publications

Flow and thermal characteristics of jet impingement: comprehensive review

Flow and thermal characteristics of jet impingement: comprehensive review

Heat Transfer Effects on a Fully Premixed Methane Impinging Flame

Horizontal meandering in direct numerical simulations of the stable boundary layer

Contact Info

Product

Resources

About