Detail publikačního výsledku

Modeling of shear stress and pressure acting on small-amplitude wavy surface in channels with turbulent flow

KNOTEK, S.; JÍCHA, M.

Originální název

Modeling of shear stress and pressure acting on small-amplitude wavy surface in channels with turbulent flow

Anglický název

Modeling of shear stress and pressure acting on small-amplitude wavy surface in channels with turbulent flow

Druh

Článek WoS

Originální abstrakt

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, ratio of the wavelength to the wave amplitude and bulk velocity. The models have been designed using results of the set of steady numerical simulations computed by k-e V2F turbulence model for various configurations defined by selection of ratio H/L in range from 0.6 to 1.4, steepness ratio L/a in range from 20 to 200 and bulk velocity Ub in range of Reynolds number Re from 3830 to 89366. The applicability of the k-e 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.

Anglický abstrakt

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, ratio of the wavelength to the wave amplitude and bulk velocity. The models have been designed using results of the set of steady numerical simulations computed by k-e V2F turbulence model for various configurations defined by selection of ratio H/L in range from 0.6 to 1.4, steepness ratio L/a in range from 20 to 200 and bulk velocity Ub in range of Reynolds number Re from 3830 to 89366. The applicability of the k-e 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.

Klíčová slova

CFD modeling; Turbulent flow; Wavy surface; Wall shear stress

Klíčová slova v angličtině

CFD modeling; Turbulent flow; Wavy surface; Wall shear stress

Autoři

KNOTEK, S.; JÍCHA, M.

Rok RIV

2015

Vydáno

18.01.2014

Nakladatel

Elsevier

ISSN

0307-904X

Periodikum

APPLIED MATHEMATICAL MODELLING

Svazek

38

Číslo

15-16

Stát

Spojené státy americké

Strany od

3929

Strany do

3944

Strany počet

15

BibTex

@article{BUT104109,
  author="Stanislav {Knotek} and Miroslav {Jícha}",
  title="Modeling of shear stress and pressure acting on small-amplitude wavy surface in channels with turbulent flow",
  journal="APPLIED MATHEMATICAL MODELLING",
  year="2014",
  volume="38",
  number="15-16",
  pages="3929--3944",
  doi="10.1016/j.apm.2013.11.065",
  issn="0307-904X"
}