Title: Dynamics of flow in a branching channel
Authors: Uruba, Václav
Procházka, Pavel
Skála, Vladislav
Citation: URUBA, V. PROCHÁZKA, P. SKÁLA, V. Dynamics of flow in a branching channel. Mechanics & Industry, 2021, roč. 22, č. APR 9 2021, s. 1-14. ISSN: 2257-7777
Issue Date: 2021
Publisher: EDP Sciences
Document type: článek
URI: 2-s2.0-85104189382
ISSN: 2257-7777
Keywords in different language: Branching channel, turbulence, dynamics, OPD
Abstract in different language: Flow in a branched channel is studied experimentally using the PIV technique. The presented study is concentrated on clarifying the dynamical behaviour in individual branches. The 11 branches issuing from the main channel perpendicularly, all channels are of rectangular cross-section. First, the time-mean flow-field is shown, then the flow dynamics is investigated using the OPD method. Flow patterns and frequencies are evaluated in three selected branches. The separated flow in branches exhibits highly dynamical behaviour, which differs substantially in the branches close to the inflow, in the main channel middle and close to its end. The typical topologies and frequencies of the detected quasi-periodical structures in the channel braches are shown in the study. Mostly, the flow-fields are populated by trains of vortices with alternating orientation and saddle-like structures. The flow-field close to the channel walls affects heat transfer process between the wall and fluid.
Rights: © author
Appears in Collections:Články / Articles (KKE)

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