Počet záznamů: 1

Approximation of velocity distribution in open channel flow

SYSNO ASEP	0342976
Druh ASEP	C - Konferenční příspěvek (mezinárodní konf.)
Zařazení RIV	D - Článek ve sborníku
Název	Approximation of velocity distribution in open channel flow
Tvůrce(i)	Ivanova, Irina (UH-J)_RID Vlasák, Pavel (UH-J)_{SAI, ORCID, RID} Chára, Zdeněk (UH-J)_{SAI, ORCID, RID} Kysela, Bohuš (UH-J)_{SAI, ORCID, RID}
Celkový počet autorů	4
Zdroj.dok.	Engineering Mechanics 2010, Book of extended abstracts. - Prague : Institute of Thermomechanics AS CR, v. v. i., 2010 / Zolotarev I. - ISBN 978-80-87012-26-0
Rozsah stran	article no. 030
Poč.str.	8 s.
Forma vydání	CD-ROM - CD-ROM
Akce	Engineering Mechanics 2010
Datum konání	10.05.2010-13.05.2010
Místo konání	Svratka
Země	CZ - Česká republika
Typ akce	EUR
Jazyk dok.	eng - angličtina
Země vyd.	CZ - Česká republika
Klíč. slova	spatial velocity profile ; channel flow ; vertical profile ; lateral profile ; power law ; logarithmic law
Vědní obor RIV	BK - Mechanika tekutin
CEP	GA103/09/1718 GA ČR - Grantová agentura ČR
CEZ	AV0Z20600510 - UH-J (2005-2011)
Anotace	The paper deals with approximation of spatial distribution of mean downstream velocity of sub-critical turbulent flow in an open rectangular channel with rough bed. New formulae of the local downstream velocity component Vx(y, z) dependence on the vertical coordinate y and lateral coordinate z were introduced. The vertical velocity profile was approximated by log-law and the power law was used to describe the effect of channel walls on the horizontal velocity profile. The suggested formulae of spatial downstream velocity component distribution were calibrated and verified using the experimental data obtained by PIV method. The proposed approximation is in good agreement with experimental data, the difference between experimental and calculated data is in range of 5 - 10% except the area near the channel’s corners and water level, where the maximal difference reaches 60% and 30% of experimental values, respectively.
Pracoviště	Ústav pro hydrodynamiku
Kontakt	Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003
Rok sběru	2011

Počet záznamů: 1