25 citations · 43 across the 8 of their papers we have counts for
8 papers
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…
Assessing non-Oberbeck-Boussinesq effects of convection in cryogenic helium
Michal Macek, Georgy Zinchenko, Vera Musilova +2
The present study investigates the non-Oberbeck-Boussinesq (NOB) effects which arise due to the temperature dependence of material properties in cryogenic helium experiments of tur…
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…
Thermal Waves and Heat Transfer Efficiency Enhancement in Harmonically Modulated Turbulent Thermal Convection
P. Urban, P. Hanzelka, T. Králík +2
We study turbulent Rayleigh-Bénard convection over four decades of Rayleigh numbers 4E8 < Ra < 2E12, while harmonically modulating the temperatures of the plates of our cylindrical…
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…
Design and testing of low temperature part of an UHV SPM microscope
Jiri Frolec, Jakub Vonka, Pavel Hanzelka +3
We have developed low temperature part of an ultra high vacuum scanning probe microscope (UHV-SPM) working at variable temperature within the range from 20 K to 700 K. To achieve t…