Hydrodynamics and Turbulence with Helium

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• Dedicated facilities


• Superfluid hydrodynamics
  • 
  • Superfluid turbulence experiments
    • Prototyping and calibration mini-wind-tunnel
    • TOUPIE wind-tunnel
    • TSF wind-tunnel
    • SHREK cell
    • Counterflow channels et pipes
  • Superfluid turbulence simulations
• Turbulent convection
  • What is natural convection ? (in french)
    
  • (Hard turbulence regime)
  • Ultimate regime of convection
• Towards very large Reynolds numbers
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  • The mini-jet
  • The GReC experiment
  • The SHREK experiment
  • The HePipe project
• Instrumentation and Nano-probes
  
  • Micro-cantilever anemometer
  • Network of micro-thermometers
  • Micron-size suspended thermometer
  • Sub-millimeter pressure probe and Pitot tubes
  • Miniature Second sound resonators
  • Micron-size anemometers with few MHz bandwidth
  • 5K-He flowmeter for 1-300g/s flows
  • High precision densimetry at low temp
  • Cryo-thermocouple
  • Stepping cryo-motoring
  • ( DC-2 MHz 15 true-bits electronic regulation )
  • ( Cryogenic electronics )

• Measurement of metal block conductitivty at low temperature

• Reactance Chart

• Johnson Nyquist thermal noise chart

 

Method of measurement of the conductitivty of metal block at low temperature

 

Mesure de la conductivité d'un bloc de cuivre massif
et application au laiton (fonction de transfer du signal Electromagnétique format pdf)

 

 

Reactance Chart

Reactance Chart : Diagramme de correspondance des impédances R, C et L en fonction de la fréquence (script disponible sur http://levetiere.pagesperso-orange.fr/levetiere/Fiches_techniques/Entrees/2010/9/26_Reactance_Chart.html )

 

 

Chart of Johnson Nyquist thermal noise

Bruit Thermique (ou "Thermodynamique") de Johnson Nyquist

 

 

Source code and online calculator of helium properties

http://he.cnrs.me