Application of low Reynolds number k–ε turbulence models to the study of turbulent wall jets

Kechiche, Jamel; Mhiri, Hatem; Palec, Georges Le; Bournot, Philippe

doi:10.1016/j.ijthermalsci.2003.06.005

Cited by 23 publications

(3 citation statements)

References 19 publications

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“…6 compares predicted wall jet spreading rates along the plate to experimental measurements of Tailland [17] for an adiabatic wall case. The Tailland data have been extracted from the paper by Kechiche et al [18]. It is noted that the Spalart and Allmaras turbulence model adopted in this work has provided satisfactory results.…”

Section: Resultsmentioning

confidence: 99%

Igniter jet dynamics in solid fuel ramjets

Tahsini¹,

Farshchi²

2009

Acta Astronautica

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Section: Resultsmentioning

confidence: 99%

Igniter jet dynamics in solid fuel ramjets

Tahsini¹,

Farshchi²

2009

Acta Astronautica

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“…The application of LRN turbulence models to numerically predict the flow and thermal characteristics of turbulent wall jet flow is first reported by Kechiche et al (2004). They have considered Reynolds number in the range 7300 − 22500.…”

Section:    mentioning

confidence: 99%

Study of Conjugate Heat Transfer from Heated Plate by Turbulent Offset Jet in Presence of Freestream Motion using Low-Reynolds Number Modeling

Rathore

2019

JAFM

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The present study deals with conjugate heat transfer from a heated flat plate by a turbulent offset jet in presence of freestream motion. The turbulent convection in fluid and conduction in solid is solved in a coupled manner by simultaneously satisfying the equality of temperature and heat flux at the solid-fluid interface. The computations have been carried out using low-Reynolds number (LRN) k −ω SST model in the fluid region. The capability of LRN modeling have enabled to solve the entire boundary layer including the thin viscous sublayer due to which Moffatt vortices (secondary recirculation regions) have been captured near the corner of the wall where the turbulence Reynolds number is low. The bottom surface of solid plate is maintained at a constant temperature higher than the jet inlet temperature whereas the jet inlet temperature is same as that of the ambient. The present investigation reports the effects of offset ratio of jet (OR), Reynolds number of flow (Re), solid to fluid thermal conductivity ratio (K), solid slab thickness (S) and freestream velocity (U∞) on conjugate heat transfer arises due to solid and fluid interaction. The offset ratio is varied in the range OR = 3 − 11, Reynolds number in the range Re = 10000 − 25000, solid to fluid thermal conductivity ratio in the range K = 1 − 2000, solid slab thickness in the range S = 1−20 and freestream velocity in the range U∞ = 0.1 − 0.25. The effects of various parameters on the near-wall velocity profile, solid-fluid interface temperature, local Nusselt number variation along the plate, heat flux variation along the plate, etc. have been discussed in detail.

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“…Here, Herrero-model [10] is chosen which contains the effect of the turbulence Reynolds number t R , due to predominant effect of molecular viscosity near the wall, and the nondimensional distance from the wall k R , due to damping velocity fluctuations in direction normal to the wall, in damping function µ f . In addition, [13] concludes that Herrero model [10] is more effective to determine the characteristics of wall jets rather than [3] and [9] . The damping functions and source terms in this model [10] are as follows:…”

Section: Nomenclaturementioning

confidence: 99%

Numerical Simulation of 2_D Turbidity Currents and Wall Jet

Shojaeefard¹

2007

American Journal of Applied Sciences

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Dense underflows are continuous currents, which move down the slope due to the fact that, their density are heavier than ambient water. In turbidity currents the density differences arises from suspended solids. Vicinity of the wall make density currents and wall jets similar in some sense but Variation of density cause this flows more complex than wall jets. An improved form of near-wall k-ε turbulence model is chosen which preserve all characteristics of both density and wall jet currents and a compression is made between them. Then the outcomes from low Reynolds number k-ε model is compared with ν²- model which show similarity. Also results show good agreement with experimental data

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Application of low Reynolds number k–ε turbulence models to the study of turbulent wall jets

Cited by 23 publications

References 19 publications

Igniter jet dynamics in solid fuel ramjets

Igniter jet dynamics in solid fuel ramjets

Study of Conjugate Heat Transfer from Heated Plate by Turbulent Offset Jet in Presence of Freestream Motion using Low-Reynolds Number Modeling

Numerical Simulation of 2_D Turbidity Currents and Wall Jet

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