کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1703794 | 1519410 | 2014 | 16 صفحه PDF | دانلود رایگان |
Simulation results and algebraic models of wall shear stress and pressure forces acting on the wavy surface in channels with turbulent flow are presented in dependence on channel height H , ratio of the wavelength λλ to the wave amplitude a and bulk velocity UbUb. The models have been designed using results of the set of steady numerical simulations computed by k –∊∊ V2F turbulence model for various configurations defined by selection of ratio H/λH/λ in range from 0.6 to 1.4, steepness ratio λ/aλ/a in range from 20 to 200 and bulk velocity UbUb in range of Reynolds number Re=HUb/νRe=HUb/ν from 3830 to 89,366. The applicability of the k –∊∊ V2F model is verified by DNS results and derived algebraic models are validated using experimental data and other models. Very good agreement with measurements is observed within a defined range of conditions.
Journal: Applied Mathematical Modelling - Volume 38, Issues 15–16, 1 August 2014, Pages 3929–3944