scholarly journals Marginal regeneration in a horizontal film: Instability growth law in the nonlinear regime

2021 ◽  
Vol 6 (2) ◽  
Author(s):  
Alice Gros ◽  
Adrien Bussonnière ◽  
Sanjiban Nath ◽  
Isabelle Cantat
Keyword(s):  
Nonlinear Regime ◽  
Film Instability ◽  
Instability Growth

A linear perturbation computation method applied to hydrodynamic instability growth predictions in ICF targets

2006 ◽  
Vol 133 ◽  
pp. 201-204
Author(s):  
J.-M. Clarisse ◽  
C. Boudesocque-Dubois ◽  
J.-P. Leidinger ◽  
J.-L. Willien
Keyword(s):  
Hydrodynamic Instability ◽  
Linear Perturbation ◽  
Computation Method ◽  
Instability Growth

scholarly journals Two-tone spectroscopy of a SQUID metamaterial in the nonlinear regime

2019 ◽  
Vol 1 (3) ◽  
Author(s):  
E. I. Kiselev ◽  
A. S. Averkin ◽  
M. V. Fistul ◽  
V. P. Koshelets ◽  
A. V. Ustinov
Keyword(s):  
Nonlinear Regime

scholarly journals Single shot, double differential spectral measurements of inverse Compton scattering in the nonlinear regime

2017 ◽  
Vol 20 (6) ◽  
Author(s):  
Y. Sakai ◽  
I. Gadjev ◽  
P. Hoang ◽  
N. Majernik ◽  
A. Nause ◽  
...  
Keyword(s):  
Compton Scattering ◽  
Nonlinear Regime ◽  
Single Shot ◽  
Spectral Measurements ◽  
Inverse Compton Scattering ◽  
Inverse Compton

CO2laser with swept pump parameter: The nonlinear regime

1991 ◽  
Vol 44 (9) ◽  
pp. 5894-5897 ◽  
Author(s):  
S. Balestri ◽  
M. Ciofini ◽  
R. Meucci ◽  
F. T. Arecchi ◽  
P. Colet ◽  
...  
Keyword(s):  
Nonlinear Regime

Excitation of Alfvén waves by fast particles in a finite pressure plasma of adiabatic traps

1978 ◽  
Vol 20 (1) ◽  
pp. 137-148 ◽  
Author(s):  
B. I. Meerson ◽  
A. B. Mikhallovskii ◽  
O. A. Pokhotelov
Keyword(s):  
Uniform Magnetic Field ◽  
Alfven Waves ◽  
Larmor Radius ◽  
Alfvén Waves ◽  
Trapped Particles ◽  
Resonance Effects ◽  
Finite Larmor Radius ◽  
Pressure Plasma ◽  
Pressure Stabilization ◽  
Instability Growth

Resonant excitation of Alfvén waves by fast particles in a finite pressure plasma in a non-uniform magnetic field is studied. Plasma compressibility in the wave field is determined both by the curvature of the magnetic lines of force and finite Larmor radius of fast particles. A general expression for the instability growth rate is obtained and analyzed; the applicability of the results obtained in the previous paper has also been studied. The finite pressure stabilization of the trapped particles instability has been found. The bounce-resonance effects are analyzed.

Influence of upper hybrid resonance localized oscillation on X-B mode conversion efficiency for high-β National Spherical Torus Experiment in nonlinear regime

2015 ◽  
Vol 22 (6) ◽  
pp. 062505 ◽  
Author(s):  
M. Abbasi ◽  
M. Ali Asgarian ◽  
S. Sobhanian ◽  
Y. Sadeghi
Keyword(s):  
Conversion Efficiency ◽  
Mode Conversion ◽  
Nonlinear Regime ◽  
Spherical Torus ◽  
Hybrid Resonance

Density-driven unstable flows of miscible fluids in a Hele-Shaw cell

2002 ◽  
Vol 451 ◽  
pp. 239-260 ◽  
Author(s):  
J. FERNANDEZ ◽  
P. KUROWSKI ◽  
P. PETITJEANS ◽  
E. MEIBURG
Keyword(s):  
Stokes Equations ◽  
Three Dimensional ◽  
Brinkman Equation ◽  
Length Scale ◽  
Dominant Wavelength ◽  
Miscible Fluids ◽  
Nonlinear Simulations ◽  
Instability Growth ◽  
Gap Width ◽  
Hele Shaw Cell

Density-driven instabilities between miscible fluids in a vertical Hele-Shaw cell are investigated by means of experimental measurements, as well as two- and three-dimensional numerical simulations. The experiments focus on the early stages of the instability growth, and they provide detailed information regarding the growth rates and most amplified wavenumbers as a function of the governing Rayleigh number Ra. They identify two clearly distinct parameter regimes: a low-Ra, ‘Hele-Shaw’ regime in which the dominant wavelength scales as Ra−1, and a high-Ra ‘gap’ regime in which the length scale of the instability is 5±1 times the gap width. The experiments are compared to a recent linear stability analysis based on the Brinkman equation. The analytical dispersion relationship for a step-like density profile reproduces the experimentally observed trend across the entire Ra range. Nonlinear simulations based on the two- and three-dimensional Stokes equations indicate that the high-Ra regime is characterized by an instability across the gap, wheras in the low-Ra regime a spanwise Hele-Shaw mode dominates.

Sign in / Sign up

Export Citation Format

Share Document