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Communication Dans Un Congrès Année : 2014

Numerical investigation on thermal and fluid dynamic behavior of laminar slot-jet impinging on a surface at uniform heat flux

Résumé

A numerical investigation on a single slot jet impinging in a porous parallel-plate channel containing an air-saturated high permeability porous medium is accomplished. The wall opposite the slot jet is partially heated at uniform heat flux and the buoyancy effects are taken into account. The fluid flow is assumed two dimensional, laminar and steady. The porous medium is modeled using the Brinkman–Forchheimer-extended Darcy model and the Boussinesq approximation. The local thermal non-equilibrium (LTNE) hypothesis is invoked. The results are discussed in terms of streamlines, fluid and solid phase temperature fields, wall temperature profiles and local and average Nusselt numbers. The porous medium allows a more significant heat transfer close to the end of the heated part of the plate. For low Péclet numbers, forced flow and natural convection are opposite and the mean Nusselt number shows a decrease in heat transfer, whereas they are aiding for high Péclet numbers. Porosity effects on the mean Nusselt numbers were found weak.
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Dates et versions

hal-01091073 , version 1 (04-12-2014)

Identifiants

  • HAL Id : hal-01091073 , version 1

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B. Buonomo, O. Manca, S. Nardini, Guy Lauriat. Numerical investigation on thermal and fluid dynamic behavior of laminar slot-jet impinging on a surface at uniform heat flux. ASME 2014 Int. Mech. Enging.Congress and Exposition, Nov 2014, Montréal, Canada. ⟨hal-01091073⟩
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