Some experimental results on flow in a diverging 2D channel

0422235 - ÚT 2014 RS eng A - Abstract
Antoš, Pavel - Jonáš, Pavel - Uruba, Václav - Hladík, Ondřej
Some experimental results on flow in a diverging 2D channel.
GAMM 2013 Books of abstract. Novi Sad: University of Novi Sad, 2013.
[Annual Meeting of the International Association of Applied Mathematics and Mechanics /84./. 18.03.2013-22.03.2013, Novi Sad]
R&D Projects: GA ČR GAP101/12/1271
Institutional support: RVO:61388998
Keywords : free stream turbulence * negative pressure gradient * diverging 2D channel
Subject RIV: BK - Fluid Dynamics

The effect of the free stream turbulence (FST) on the essential flow characteristics was investigated in the diverging 2D channel. The diverging channel was modelled in the closed type working section by fastening a displacement body above the flat plate that is parallel with the wind-tunnel axis. The angle of the channel expansion 11 degree induced the pressure gradient parameter K = from -0.16 to -0.28 with the flow velocity U0=30 m/s at the start of expansion, x=0. The height of the channel is 0.15 m at x = 0. FST was either natural 0.3 percent or amplified by turbulence generating grids/screens with turbulence levels up to 5 percent.
Permanent Link: http://hdl.handle.net/11104/0229598