Using torsional oscillations to study liquid-solid transitions

2010 ◽  
Vol 36 (3) ◽  
pp. 279-281 ◽  
Author(s):  
L. A. Bulavin ◽  
O. Yu. Aktan ◽  
Yu. F. Zabashta ◽  
T. Yu. Nikolaenko ◽  
N. L. Sheiko
Keyword(s):  
Torsional Oscillations

scholarly journals Leading modes of torsional oscillations within the Earth's core

2009 ◽  
Vol 36 (15) ◽  
pp. n/a-n/a ◽  
Author(s):  
Jean O. Dickey ◽  
Olivier de Viron
Keyword(s):  
Earth’S Core ◽  
Torsional Oscillations ◽  
Earth's Core

On a sphere performing linear and torsional oscillations in a viscous fluid

1988 ◽  
Vol 66 (7) ◽  
pp. 576-579
Author(s):  
G. T. Karahalios ◽  
C. Sfetsos
Keyword(s):  
Boundary Layer ◽  
Viscous Fluid ◽  
Secondary Flow ◽  
Small Amplitude ◽  
Equations Of Motion ◽  
Successive Approximations ◽  
Method Of Successive Approximations ◽  
Time Varying ◽  
Torsional Oscillations

A sphere executes small-amplitude linear and torsional oscillations in a fluid at rest. The equations of motion of the fluid are solved by the method of successive approximations. Outside the boundary layer, a steady secondary flow is induced in addition to the time-varying motion.

Erratum: Simultaneous measurement of torsional oscillations and NMR of very diluteHe3in solidHe4[Phys. Rev. B81, 214515 (2010)]

2010 ◽  
Vol 82 (21) ◽  
Author(s):  
Ryo Toda ◽  
Patryk Gumann ◽  
Kei Kosaka ◽  
Masatomo Kanemoto ◽  
Wakana Onoe ◽  
...  
Keyword(s):  
Simultaneous Measurement ◽  
Torsional Oscillations

Steady streaming within a periodically rotating sphere

2008 ◽  
Vol 608 ◽  
pp. 71-80 ◽  
Author(s):  
RODOLFO REPETTO ◽  
JENNIFER H. SIGGERS ◽  
ALESSANDRO STOCCHINO
Keyword(s):  
Series Expansion ◽  
Oscillation Frequency ◽  
Small Amplitude ◽  
Quantitative Agreement ◽  
Torsional Oscillations ◽  
Rotating Sphere ◽  
Good Quantitative Agreement ◽  
Steady Streaming ◽  
Theory And Experiments ◽  
Streaming Flow

We consider the flow in a spherical chamber undergoing periodic torsional oscillations about an axis through its centre, and analyse it both theoretically and experimentally. We calculate the flow in the limit of small-amplitude oscillations in the form of a series expansion in powers of the amplitude, finding that at second order, a steady streaming flow develops consisting of two toroidal cells. This streaming behaviour is also observed in our experiments. We find good quantitative agreement between theory and experiments, and we discuss the dependence of the steady streaming behaviour as both the oscillation frequency and amplitude are varied.

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