Eine experimentelle Untersuchung zu Waermetransport und Wirbeldynamik in superfluidem Helium
Germany
Germany
At present the turbulent flow around ships can be determined only for model Reynolds numbers of about 10 except when using wall functions; however, the latter leads to dubious results. The present research program aimed to develop a new procedure for such calculations avoiding wall functions. A finite-volume method using boddy-fitted coordinates as...
Object of this work were the steady state and the transient properties of a tangle of quantized vortex lines - the so-called superfluid turbulence - in a counterflow. The experiments were performed in the temperature range from 1.5 to 2.0 K, using a wide counterflow channel (3.16 x 0.95 cm"2 cross sectional area, 20 cm length) and heat fluxes in th...
Germany