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2 315 (0,055s) •

Project

Cryogenic materials and measurement of their emissivities (IBS2065109)

an optimum thermal radiation shielding in cryogenic devices operating at temperatures 4 transfer between radiation source 77-300 K and receiving surfaceheld at 4-77 K. Emissivity measurements at 4 K will be prefer...

BM - Fyzika pevných látek a magnetismus

  • 2001 - 2004
    • •
  • 3 746 tis. Kč
    • •
  • 1 208 tis. Kč
    • •
  • AV ČR
Project

How is flying possible in a superfluid? Probing lift generation in liquid helium-4 to identify its Newtonian features (LL2326)

Superfluid helium-4 is a unique cryogenic liquid and its similarities with classical Newtonian fluids have yet to be neatly identified. In view of addressing this open question, we will investigate in unprecedented detail a...

Fluids and plasma physics (including surface physics)

  • 2023 - 2025
    • •
  • 11 304 tis. Kč
    • •
  • 10 872 tis. Kč
    • •
  • MŠMT
Project

Quantum-Classical Ultimate Turbulence Analogies in Heat Transfer (EF18_070/0009944)

fluids at cryogenic temperatures. The aims are (i) to formulate a unfied model describing the heat trasnfer laws in quantum fluid (superfluid helium-4, in the so-called "quantum counterflow") and in a classical fluid (norm...

Fluids and plasma physics (including surface physics)

  • 2018 - 2021
    • •
  • 4 084 tis. Kč
    • •
  • 4 084 tis. Kč
    • •
  • MŠMT
Project

Selected problems of cryogenic fluid dynamics (GA202/08/0276)

Experimental investigation of selected laminar and turbulent flows of cryogenic helium gas, normal liquid He I and superfluid  He II over a wide range of temperature and pressure providing an unprecedented range of flow properties o...

BK - Mechanika tekutin

  • 2008 - 2012
    • •
  • 4 843 tis. Kč
    • •
  • 4 843 tis. Kč
    • •
  • GA ČR
Project

Dynamics of large vortices in quantum turbulence (GA19-00939S)

The investigation of turbulent flows of superfluid helium-4 is an active and challenging research field, which combines classical physics with quantum mechanics of superfluid helium-4 will be specifically compared ...

Condensed matter physics (including formerly solid state physics, supercond.)

  • 2019 - 2021
    • •
  • 7 977 tis. Kč
    • •
  • 6 756 tis. Kč
    • •
  • GA ČR
Project

*Research and development of cryogenic high speed turbines and compressors. (FF-P2/058)

*Research and development of cryogenic high speed turbines and compressors. The machines are operated with cryogenic gases (especially helium) of temperature 3K - 100K (-270C - (-173)C). Experimental research of vibration, ...

JR - Ostatní strojírenství

  • 2003 - 2006
    • •
  • 5 658 tis. Kč
    • •
  • 2 500 tis. Kč
    • •
  • MPO
Project

Non-Oberbeck-Boussinesq effects in turbulent convection in cryogenic helium at high Rayleigh numbers (GC21-06012J)

Experiments on turbulent Rayleigh-Bénard convection (RBC) in cryogenic helium gas reach the highest possible Rayleigh numbers generating vigorous turbulence of cryogenic helium parameters on temperature and pressur...

Fluids and plasma physics (including surface physics)

  • 2021 - 2023
    • •
  • 7 125 tis. Kč
    • •
  • 6 141 tis. Kč
    • •
  • GA ČR
Project

Ultimate regimes of turbulent convection in nonideal fluids revisited (GA25-16812S)

performed using various working fluids, like cryogenic helium 4, or sulphur hexafluoride...

Condensed matter physics (including formerly solid state physics, supercond.)

  • 2025 - 2027
    • •
  • 7 384 tis. Kč
    • •
  • 6 985 tis. Kč
    • •
  • GA ČR
Project

Cryogenic helium classical and quantum turbulence (GA202/05/0218)

An experimental study is proposed to use 4He as a working fluid for investigation of classical and quantum turbulence, based on complementary cryogenic Rayleigh numbercryogenic turbulent thermal convection in the cold helium gas flo...

BK - Mechanika tekutin

  • 2005 - 2007
    • •
  • 2 494 tis. Kč
    • •
  • 2 494 tis. Kč
    • •
  • GA ČR
Project

Visualization of liquid helium flows (GAP203/11/0442)

Visualization of selected cryogenic flows of normal liquid 4He and its a readilly available setup for preparing seeding particles, a custom-made optical helium cryostat, an efficient helium-tight pumping and gas handling sy...

BK - Mechanika tekutin

  • 2011 - 2015
    • •
  • 7 991 tis. Kč
    • •
  • 7 991 tis. Kč
    • •
  • GA ČR
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