LIQUID HELIUM FLOWS AROUND AN OSCILLATING CYLINDER etc15 Tracking Number 144Presentation: Session: Superfluids 1 Room: Room E Session start: 10:30 Wed 26 Aug 2015 Daniel Duda prog.dan@seznam.cz Affifliation: Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic Patrik Svancara patriksvancara@gmail.com Affifliation: Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic Marco La Mantia lamantia@nbox.troja.mff.cuni.cz Affifliation: Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic Miloš Rotter rotter@mbox.troja.mff.cuni.cz Affifliation: Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic Ladislav Skrbek skrbek@fzu.cz Affifliation: Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic Topics: - Turbulence in superfluids Abstract: The complementary flows of normal viscous liquid helium (He I) and of superfluid helium (He II) around an oscillating obstacle, of rectangular cross-section, have been studied experimentally by using the particle tracking velocimetry technique, with solid deuterium particles. The observed particle behaviour in He II is very similar to that seen in He I. It seems therefore that, without some kind of special forcing acting differently on each superfluid helium component, on length scales which the experiment can access, the oscillating quantum flow mimics the classical one. |