Overturning of nonlinear shear waves in media with power-law attenuation

2016 ◽  
Vol 140 (4) ◽  
pp. 3327-3327
Author(s):  
John M. Cormack ◽  
Mark F. Hamilton
Keyword(s):  
Power Law ◽  
Shear Waves ◽  
Nonlinear Shear

Cylindrically converging nonlinear shear waves

2017 ◽  
Vol 141 (5) ◽  
pp. 3551-3552
Author(s):  
John M. Cormack ◽  
Kyle S. Spratt ◽  
Mark F. Hamilton
Keyword(s):  
Shear Waves ◽  
Nonlinear Shear

Measured power law attenuation of shear waves in swine liver

2019 ◽  
Vol 145 (3) ◽  
pp. 1861-1861
Author(s):  
Steven A. Grosz ◽  
Rebeca Pereira ◽  
Matthew W. Urban ◽  
Robert McGough
Keyword(s):  
Power Law ◽  
Shear Waves ◽  
Swine Liver ◽  
Measured Power

scholarly journals Effect of Compliant Boundaries on Weakly Nonlinear Shear Waves in Channel Flow

1990 ◽  
Vol 50 (2) ◽  
pp. 361-394 ◽  
Author(s):  
James M. Rotenberry ◽  
Philip G. Saffman
Keyword(s):  
Channel Flow ◽  
Shear Waves ◽  
Weakly Nonlinear ◽  
Nonlinear Shear

Power law attenuation of shear waves in fractal media

2018 ◽  
Vol 143 (3) ◽  
pp. 1802-1802
Author(s):  
Sverre Holm ◽  
Ralph Sinkus
Keyword(s):  
Power Law ◽  
Shear Waves ◽  
Fractal Media

Modeling of nonlinear shear waves in soft solids

2004 ◽  
Vol 116 (5) ◽  
pp. 2807-2813 ◽  
Author(s):  
Evgenia A. Zabolotskaya ◽  
Mark F. Hamilton ◽  
Yurii A. Ilinskii ◽  
G. Douglas Meegan
Keyword(s):  
Shear Waves ◽  
Soft Solids ◽  
Nonlinear Shear

Power Law Behavior of Shear Waves Measured in Swine Liver

2019 ◽  
Author(s):  
Steven A. Grosz ◽  
Rebeca Pereira ◽  
Nicholas A. Bannon ◽  
Matthew W. Urban ◽  
Robert J. McGough
Keyword(s):  
Power Law ◽  
Shear Waves ◽  
Swine Liver

Weakly nonlinear shear waves

1998 ◽  
Vol 372 ◽  
pp. 71-91 ◽  
Author(s):  
FALK FEDDERSEN
Keyword(s):  
Shear Wave ◽  
Surf Zone ◽  
Second Harmonic ◽  
Shear Waves ◽  
Finite Amplitude ◽  
Shear Instability ◽  
Weakly Nonlinear ◽  
Wide Range ◽  
Alongshore Current ◽  
Nonlinear Shear

Alongshore propagating low-frequency O(0.01 Hz) waves related to the direction and intensity of the alongshore current were first observed in the surf zone by Oltman-Shay, Howd & Birkemeier (1989). Based on a linear stability analysis, Bowen & Holman (1989) demonstrated that a shear instability of the alongshore current gives rise to alongshore propagating shear (vorticity) waves. The fully nonlinear dynamics of finite-amplitude shear waves, investigated numerically by Allen, Newberger & Holman (1996), depend on α, the non-dimensional ratio of frictional to nonlinear terms, essentially an inverse Reynolds number. A wide range of shear wave environments are reported as a function of α, from equilibrated waves at larger α to fully turbulent flow at smaller α. When α is above the critical level αc, the system is stable. In this paper, a weakly nonlinear theory, applicable to α just below αc, is developed. The amplitude of the instability is governed by a complex Ginzburg–Landau equation. For the same beach slope and base-state alongshore current used in Allen et al. (1996), an equilibrated shear wave is found analytically. The finite-amplitude behaviour of the analytic shear wave, including a forced second-harmonic correction to the mean alongshore current, and amplitude dispersion, agree well with the numerical results of Allen et al. (1996). Limitations in their numerical model prevent the development of a side-band instability. The stability of the equilibrated shear wave is demonstrated analytically. The analytical results confirm that the Allen et al. (1996) model correctly reproduces many important features of weakly nonlinear shear waves.

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