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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F14%3APU106795" target="_blank" >RIV/00216305:26210/14:PU106795 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.apm.2013.11.065" target="_blank" >http://dx.doi.org/10.1016/j.apm.2013.11.065</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apm.2013.11.065" target="_blank" >10.1016/j.apm.2013.11.065</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

<a href="/cs/project/GAP105%2F11%2F1339" target="_blank" >GAP105/11/1339: Oscilační a ustálené turbulentní a laminární proudění s porézními částicemi v mnohočetných větveních</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

APPLIED MATHEMATICAL MODELLING

ISSN

0307-904X

e-ISSN

1872-8480

Svazek periodika

38

Číslo periodika v rámci svazku

15-16

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

15

Strana od-do

3929-3944

Kód UT WoS článku

000340693500021

EID výsledku v databázi Scopus

2-s2.0-84904806553