|Göttingen Turbulence Facilities (GTF),
Since Feb 2008
GTF1: Turbulence tunnel 1.8 m dia. 18 m long, very high Re ~5×107 with active grid.
GTF2: Thermal convection Ra~1015, versatile for modified inserts. SF6 or other gasses at 19 bar – adjustable properties.
GTF3: Karman Swirling flow using water or complex fluids.
Instruments: 3D Particle Tracking, Tomo PIV, LDV, PDPA, nano fabricated hotwires, oil particle generators, active grid, high power pulsed lasers, temperature sensors.
|Free stream turbulence in closed flows. Ideal for study of turbulence at very high Re and Ra. Particle dynamics in simple and complex fluids. Highest Re and Ra at room temperature. Versatile installations possible. Accessible down to 1mbar for astrophysics applications.|
|Grenoble Helium Infrastructures (GHI),
SHREK: He cryostat at 1.6 K, von Karman mixer up to Re~108.
HeJet: He jet at 1.6 K, Re~4×106.
Instruments: temperature sensors, miniature Pitot tubes, second sound probes.
|Jet and von Karman flows with ultra high Re, both superfluid and normal turbulence measurements possible in the same experiment.|
|Barrel of Ilmenau (BOI),
|Turbulent thermal convection in air (7.0m × 6.3m).
Instruments: LDV, PIV, PTV, ultra-small temperature probes, infrared camera.
|Rayleigh-Bènard experiment with unrivalled spatial and temporal resolution.|
|Twente Turbulence Facilities (TTF), Enschede, NL
TWT: since 2007
T3C: since 2010
|TWT: Active grid generated high Re turbulence for bubbly and light particle flows.
T3C: Single and two-phase turbulent Taylor-Couette flows.
Instruments: 3D PTV, 3D-PIV, LDA, optical probes, hot-film anemometry.
|Two-phase flow, active grid generated turbulence, TC flow in an unexplored parameter range at very high Re.|
Starting Jan 2014
|Precision long pipe (0.9 m diam., 120 m long) devised to study boundary (“naturally”) generated turbulence at high Reynolds numbers. All turbulent scales fully resolvable.||Long Pipe. Ideal for the investigation of transition to turbulence and boundary driven turbulence.|
|High Rayleigh number Cryogenic Facility (HRCF)
Since Dec 2003
|Cryogenic He at 4-6 K. Convection with world-record Ra~1017. Rotation up to 60 rpm Ta~1015.
Instruments: liquid helium PIV, non-intrusive light scattering and fluorescence techniques.
|Convective turbulence with highest Ra with and without rotation. Low temperature PIV and optical access.|
|CERN Cryogenic Turbulence Facility (GReC),
|Axisymmetric jet with Re~2×107
Instruments: movable, fast response, hot and cold wire anemometry, acoustic scattering.
|Jet flow with ultra high Re, movable, fast response, hot and cold wire anemometry to resolve Kolmogorov length.|
|CORIOLIS rotating platform
Starting mid 2013
|Rotating platform with a tank 13 m in diameter and 1.2 m in height,
Instruments: time-resolved PIV, ultrasonic velocimeter, temperature and salinity sensors
|Unique installation for the study of turbulence influenced by rotation and/or density stratification.|
|LML boundary layer wind tunnel
|Wind tunnel 20m long, transparent test section, 5 m long, up to 10m/s free stream velocity, Re~4×105
Instruments: stereo and Tomo PIV, hot-wire anemometry
|High Re number turbulent boundary layer, resolvable over all scales, unique optical access|
|Czech Cryogenic Turbulence Facility (CCTF)
|CCTF 1: low temperature He cryostat at 1.1 K with opt access for PIV/PTV measurement
CCTF 2: He II quantum turbulence facility
CCTF 3: He cryostat for Rayleigh-Bénard convection, Ra~1015
|Liquid and superfluidic Helium flows can be studied, Rayleigh-Bénard convection under Boussinesq-conditions|
|Refractive Index Matched Tunnel (RIMT)
|Index matched tunnel, 0.6 m × 0.45 m × 2.5 m, Flow speed: 0-4.8 m/s, Turb. intensity: <0.1%
Instruments: 3 component LDA, PIV, Stereo PIV, hot-film sensors
|Near wall measurements with optical measurement technique are possible, inserted structures and be invisible|
|Cottbus Turbulence Experiment Facilities (CoGeoF)
|CoGeoF1: Baroclinic Wave Tank, 104<Ta<1011
CoGeoF2: Inertial wave tank
CoLaPipeF: highly turbulent pipe flow, Re~106
|Various rotating turbulence experiments in fluids, one pipe flow experiment, full set of flow measurement technique for geophysical flows.|
|Turin Rotating Platform (TurLab)
|Rotating platform 5 m diameter and 1 m depth, rotation rate up to 0.3s-1, can be filled with water and density stratified
Instruments: PIV, PTV
|Study of turbulence in presence of rotation and stratification. Ideal for oceanographic studies.|