Large-Eddy Simulation of Heat Transfer From Impinging Slot Jets

Cziesla, T.; Tandogan, E.; Mitra, N. K.

doi:10.1080/10407789708913876

Cited by 36 publications

(11 citation statements)

References 18 publications

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“…These phenomena were explained by the appearance of the separated and recirculating flow formed between adjacent slot jets. Cziesla et al [24] numerically obtained Nussett number distributions for impinging jet array of slot nozzles (rectangular jets) by using large-eddy simulation (LES) and the direct numerical simulation (DNS). Coussirat et al [25] performed a numerical analysis of the flow behavior in industrial cooling systems based on arrays of impinging jets using several eddy viscosity models to determine their modeling capabilities.…”

Section: Introductionmentioning

confidence: 99%

Investigation of flow structure and heat transfer characteristics in an array of impinging slot jets

Özmen

İpek

2015

Heat Mass Transfer

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Section: Introductionmentioning

confidence: 99%

Investigation of flow structure and heat transfer characteristics in an array of impinging slot jets

Özmen

İpek

2015

Heat Mass Transfer

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“…Shuja et al [38] used standard k-model, LRN k-model, and two Reynolds stress models to examine jet impingement on a surface having constant heat flux over a limited area. Cziesla et al [39] studied the heat transfer from impinging slot jets using large-eddy simulations (LESs).…”

Section: Introductionmentioning

confidence: 99%

Hybrid turbulence simulation of spray impingement cooling: The effect of vortex motion on turbulent heat flux

Kondaraju

Lee

2008

Numerical Methods in Fluids

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SUMMARYSpray impingement has been a major interest of researchers in the areas of spray cooling, internal combustion, fire suppression and spray cooling, etc. for a long time. Numerous studies have been done in the area of spray cooling. Spray cooling with phase change takes advantage of relatively large amounts of latent heat and is capable of removing high heat fluxes from the surface, which has generated the interest of many researchers. In this paper, the turbulent characteristics of vapor formed during the spray impingement are studied. Water and gasoline are used in the numerical analysis of the two-phase spray impingement on a heated wall. Hybrid turbulence modeling was used for the analysis where the subgrid scale model was employed away from the wall and k-model was used near the wall. Gasoline, at 298 K, was sprayed on the heated wall, kept constant at 650 K. The surrounding temperature was maintained at 400 K at the start of the simulation. In case of water and gasoline at Reynolds number 2750, the heated wall was kept constant at 400 K and the surrounding temperature was maintained at 298 K at the start of the simulations. The nozzle diameter of 100 m was used for this study, with the nozzle plate spacing ratio at 10. The spray was impinged on the flat plate at angles of 0, 15, and 30 • . Root mean-squared velocities and turbulent heat flux were plotted in the water spray impingement for the different angles of impingement. The effect of turbulence on the heat transfer was observed. The effect of vortex motion on the turbulent heat flux values was analyzed using different Reynolds numbers of impingement and at different angles in case of gasoline. The turbulent heat flux attained the maximum values with high vortex formation. Upwash of fluid transported heat away from the wall, producing higher heat flux values in the region.

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“…The use of LES, has helped to understand the heat transfer interactions both at the sub-grid and resolved scales level. Cziesla et al [10] used a dynamic sub-grid scale (SGS) model to simulate impinging jet flow from an array of slot nozzles. A logarithmic law of the wall was used in LES simulations.…”

Section: Introductionmentioning

confidence: 99%

Validation of DES-SST Based Turbulence Model for a Fully Developed Turbulent Channel Flow Problem

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Lightstone

Hamed

2009

Numerical Heat Transfer, Part A: Applications

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This work discusses simulations using the detached eddy simulation based (DES) turbulence model to investigate turbulent channel flows. Applicability of Strelets' (2001) version of the DES model was tested for a fully developed turbulent channel flow problem in a rectangular duct. The unsteady Navier-Stokes equations were solved numerically at Reynolds number, Re s , of 180, 590, and 2000, respectively, and compared to results obtained using direct numerical simulation (DNS) and previously published DES data. Effects of grid density and advection scheme were investigated. Overall, the model predicted the correct trends in the variation of turbulence quantities and compared reasonably well.

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Large-Eddy Simulation of Heat Transfer From Impinging Slot Jets

Cited by 36 publications

References 18 publications

Investigation of flow structure and heat transfer characteristics in an array of impinging slot jets

Investigation of flow structure and heat transfer characteristics in an array of impinging slot jets

Hybrid turbulence simulation of spray impingement cooling: The effect of vortex motion on turbulent heat flux

Validation of DES-SST Based Turbulence Model for a Fully Developed Turbulent Channel Flow Problem

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