کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1703794 1519410 2014 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modeling of shear stress and pressure acting on small-amplitude wavy surface in channels with turbulent flow
ترجمه فارسی عنوان
مدل سازی تنش برشی و فشار بر روی سطح موج موجک کوچک در کانال ها با جریان آشفته
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک محاسباتی
چکیده انگلیسی

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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Mathematical Modelling - Volume 38, Issues 15–16, 1 August 2014, Pages 3929–3944
نویسندگان
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