Schoepe, W. (2017) Vortex Shedding from an Object Moving in Superfluid He-4 at mK Temperatures and in a Bose-Einstein Condensate. JOURNAL OF LOW TEMPERATURE PHYSICS, 186 (1-2). pp. 121-126. ISSN 0022-2291, 1573-7357
Full text not available from this repository. (Request a copy)Abstract
Vortex shedding from a microsphere oscillating in superfluid He-4 at mK temperatures is compared with that from a laser beam moving in a Bose-Einstein condensate as observed by other authors. In particular, in either case a linear dependence of the shedding frequency f(v) on Delta(v) = v - v(c) is observed, where v is the velocity amplitude of the sphere or the constant velocity of the laser beam above a critical velocity vc for the onset of turbulent flow: f(v) = a Delta v, where the coefficient a is proportional to the oscillation frequency omega above some characteristic frequency omega(k) and assumes a finite value for steady motion omega -> 0.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | OSCILLATING MICROSPHERE; CRITICAL VELOCITY; FLOW; TURBULENCE; LAMINAR; GAS; Quantum turbulence; Vortex shedding frequency; Superfluid He-4; BEC |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Prof. Wilfried Schoepe |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Dec 2018 12:58 |
| Last Modified: | 13 Feb 2019 13:44 |
| URI: | https://pred.uni-regensburg.de/id/eprint/125 |
Actions (login required)
 |
View Item |
