5 papers · 1 filter
Experimental Challenges in Determining Heat Transfer Efficiency Scaling in Highly Turbulent Cryogenic Rayleigh-Benard Convection
P. Urban, V. Musilova, P. Hanzelka +3
Cryogenic Rayleigh-Benard convection (RBC) at very high Rayleigh numbers (Ra) serves as a key system for understanding buoyancy-driven industrial and large scale natural flows and…
Dynamics of quantum turbulence in axially rotating thermal counterflow
Ritesh Dwivedi, Tomáš Dunca, Filip Novotný +6
Generation, statistically steady state, and temporal decay of axially rotating thermal counterflow of superfluid He (He~II) in a square channel is probed using the second sound…
A removable temperature sensors holder for cryogenic Rayleigh-Bénard convection cell
Pavel Hanzelka, Ivan Vlcek, Pavel Urban
A removable holder carrying a set of miniature temperature sensors inside our Rayleigh-Bénard convection cylindrical cell has been developed. The sensors should not disturb the tem…
Effect of boundary conditions in turbulent thermal convection
P. Urban, T. Králík, M. Macek +2
We report an experimental study aiming to clarify the role of boundary conditions (BC) in high Rayleigh number turbulent thermal convection of…
Thermal Radiation in Rayleigh-Bénard Convection Experiments
P. Urban, T. Králík, P. Hanzelka +4
An important question in turbulent Rayleigh-Bénard convection (RBC) is the effectiveness of convective heat transport, which is conveniently described via the scaling of the Nussel…