Water surface topology of supercritical junction flow

Gašper Rak (Author), Marko Hočevar (Author), Franci Steinman (Author)

Abstract

The complexity of flow conditions at junctions amplifies significantly with supercritical flow. It is a pronounced three-dimensional two-phased flow phenomenon, where standing waves with non-stationary water surface are formed. To analyse the hydrodynamic conditions at an asymmetric right-angled junction with incoming supercritical flows at Froude numbers between 2 and 12, an experimental approach was used. For a phenomenological determination of the relations between the integral parameters of incoming flows and the characteristics of standing waves at the junction area, water surface topographies for 168 scenarios at the junction were measured using non-intrusive measurement techniques. The new, phenomenologically derived equations allow for determination of location, height and extent of the main standing waves at the junction. Research results give important information on the processes and their magnitude for engineering applications.

Keywords

gradbeništvo;vodarstvo;hidrotehnika;sotočje;hidravlične raziskave;stoječe valovanje;deroči tok;vzorci vodnega toka;junction;hydraulic experimentation;standing wave;supercritical flow;flow patterns;

Data

Language:	English
Year of publishing:	2019
Typology:	1.01 - Original Scientific Article
Organization:	UL FGG - Faculty of Civil and Geodetic Engineering
UDC:	621.22-821:626/627
COBISS:	8671841
ISSN:	0042-790X
Views:	312
Downloads:	107
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary keywords:	gradbeništvo;vodarstvo;hidrotehnika;sotočje;hidravlične raziskave;stoječe valovanje;deroči tok;vzorci vodnega toka;
Type (COBISS):	Article
Pages:	str. 163-170
Volume:	ǂVol. ǂ67
Issue:	ǂno. ǂ2
Chronology:	Jun. 2019
DOI:	10.2478/johh-2018-0042
ID:	12795052