On the Non-linear Damping of Mechanical Oscillators in Flows of 4He
Schmoranzer
D
author
Jackson
M
J
author
Luzuriaga
J
author
2014
In the studies of both classical and quantum turbulence, significant attention is devoted to the investigation of the behavior of various submerged resonators. Upon entering the turbulent regime, the oscillators start to experience a significant drag force, which varies non-linearly with velocity. We present an empirical way of modeling such systems, and calculate the expected resonant response of such oscillators near the fundamental frequency as a function of the applied driving force. We apply the model to the crossover from linear to non-linear drag forces and compare with previous models as well as selected experimental data on the transition to turbulence in oscillatory flow of 4He.
Resonator
Non-linear dissipation
Turbulence
Liquid helium
exported from refbase (http://fisica.cab.cnea.gov.ar/bt/refbase/show.php?record=663), last updated on Sat, 01 Oct 2016 13:00:28 -0300
text
10.1007/s10909-013-0920-8
Schmoranzer_etal2014
Journal of Low Temperature Physics
J. Low Temp. Phys.
2014
Springer US
continuing
periodical
academic journal
175
1
97
103
0022-2291