EUHit Infrastructures

Infrastructure	Description	Uniqueness
Göttingen Turbulence Facilities (GTF), Göttingen, DE, since Feb 2008.	GTF1: Turbulence tunnel 1.8 m dia. 18 m long, very high Re ~5x107 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), Geneva, CERN, since 2009.	SHREK: He cryostat at 1.6 K, pipe with Re~2x107 von Karman mixer up to Re~108, HeJet: He jet at 1.6 K, Re~4x105, Instrumentation: temperature sensors, miniature Pitot tubes, second sound probes.	Jet and pipe flows with ultra high Re, both superfluid and normal turbulence measurements possible in the same experiment.
Barrel of Ilmenau (BOI), Ilmenau, DE, since 2001.	Turbulent thermal convection in air (7.0m x 6.3m). Instruments: LDV, PIV, PTV, ultra-small temperature probes, infrared camera.	Rayleigh-Bènard experiment with unrivalled spatial and temporal resolution.
Twente Turbulence facility (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.
CICLoPE Bologna, IT, starting Jan. 2014.	Precision long pipe (0.9 m∅, 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) Trieste, IT, 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), Geneva, CERN, since 2000.	Axisymmetric jet with Re~2x107 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 Grenoble, FR, 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 Lille, FR, since 1993.	Wind tunnel 20m long, transparent test section, 5 m long, up to 10m/s free stream velocity, Re~4x105 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) Prague, CZ, since 2011.	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) Nürnberg, D, since 2000.	Index matched tunnel, 0.6 m x 0.45 m x 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 Geophysics Experiments (CoGeoF) Cottbus, D, since 2004.	CoGeoF1: Baroclinic Wave Tank,104<Ta<1011 CoGeoF2: Inertial wave tank, CoGeoF3: Taylor-Couette-System 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) Torino, IT, since 2005.	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.
CINECA-DLTD Bologna, IT, since 2006.	World’s largest databases freely available to the European turbulence community, easily accessible through communication networks.	Turbulence database service