2008/12/31 by Shoji Fujiyama, Makoto Tsubota
Physics and Astronomy · #Classical mechanics #Cold Atom Physics and Bose-Einstein Condensates #Drag #Drag coefficient #Drag divergence Mach number #Drag equation #Mechanics #Oscillation (cell signaling) #Parasitic drag #Physics #Quantum #Quantum mechanics #Quantum turbulence #Quantum, superfluid, helium dynamics #Reynolds number #Solar and Space Plasma Dynamics #Turbulence #cond-mat.other
paper · pdf · doi:10.1103/physrevb.79.094513
published as Phys. Rev. B 79, 094513 (2009) · 7 pages, 5 figures, 1 table
openalex publication_date 2009/03/11 · arxiv created 2009/04/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
This paper reports results of the computation of the drag force exerted on an oscillating object in quantum turbulence in superfluid 4He. The drag force is calculated on the basis of numerical simulations of quantum turbulent flow about the object. The drag force is proportional to the square of the magnitude of the oscillation velocity, which is similar to that in classical turbulence at high Reynolds number. The drag coefficient is also calculated, and its value is found to be of the same order as that observed in previous experiments. The correspondence between quantum and classical turbulences is further clarified by examining the turbulence created by oscillating objects.