Vortical structures and heat transfer in a round impinging jet
Citations
173 citations
130 citations
Cites background or methods from "Vortical structures and heat transf..."
...Voke and Gau [32] and Hadziabdic and Hanjalic [14] generated inflow conditions from precursor simulations of a channel flow and pipe flow, respectively, for their plane and round jet impingements....
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...Because of these two distinct shear layers, turbulence levels in a wall jet are much higher than those in a boundary ayer [14]....
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...However, a recent trend is to use the finite-volume method in all the three directions [14, 35, 37]....
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...Hadziabdic and Hanjalic [14] Dynamic Smagorinsky SGS...
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...Hadziabdic and Hanjalic [14] tested three different types of boundary conditions, i....
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129 citations
108 citations
Cites background or methods from "Vortical structures and heat transf..."
...Recently, Hadziabdic and Hanjalic [20] performed Large Eddy Simulations of an impinging jet at Re = 20000 for H/D = 2, using unstructured grids....
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...The investigations at Reynolds number of 23000 is specifically targeted as both flow field and heat transfer by the jet impingement close to this Reynolds number had been investigated in past [20,31–33]....
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...Hadziabdic and Hanjalic [20] have suggested that the constant precessing in this zone might be the reason for the high stagnation point heat transfer....
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...Through investigations based on LES, Hadziabdic and Hanjalic [20] proposed that the second peak in the Nusselt number is believed to be caused by reattachment of the recirculation bubble and associated turbulence production, as well as subsequent strong advection....
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102 citations
Cites background or result from "Vortical structures and heat transf..."
...011 is attributed to the rapid acceleration of the radial wall jet [13]....
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...012 in good agreement with the LES of Hadziabdic and Hanjalic [13] ( vLES=Ub 1⁄4 0:790 at x/ D = 0....
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...5 these vortices roll along the edge of the wall jet and induce strong pressure gradients which decelerate the fluid layer close to the plate [13]....
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...25 mm which is somewhat less than the predictions of Hadziabdic and Hanjalic [13]....
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...To some degree the latter view is supported by the results of a recent LES reported by Hadziabdic and Hanjalic [13]....
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References
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6,495 citations
"Vortical structures and heat transf..." refers background in this paper
...For isotropic turbulence, Pope (2000) among others, showed that a grid spacing of 12η is required in order to resolve the major contributions to the dissipation....
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4,190 citations
"Vortical structures and heat transf..." refers methods in this paper
...The discretization of the energy equation was similar to that for the momentum equations, except that the QUICK convective scheme was used throughout to avoid overshoot which can otherwise lead to the occurrence of negative temperatures....
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...Since the affected region is characterized by high pressure gradient, it is not likely that the numerical diffusion associated with the QUICK scheme significantly affects the overall accuracy....
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...The problem was cured by applying the second-order accurate upwind-biased scheme QUICK (Leonard 1979, 1988) locally in the thin circular region within r/D 0.5 and z/D 0.15....
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2,299 citations
935 citations
"Vortical structures and heat transf..." refers background in this paper
...Other aspects have also been discussed in experimental studies (Livingood & Hrycak 1973; Baughn & Shimizu 1989; Kataoka 1990; Viskanta 1993; Nishino et al. 1996) and others....
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