Two-dimensional interaction of a shear flow with a free surface in a stratified fluid and its solitary-wave solutions via mathematical methods

AR Seadawy - The European Physical Journal Plus, 2017 - Springer
In this study, we presented the problem formulations of models for internal solitary waves in
a stratified shear flow with a free surface. The nonlinear higher order of extended KdV …

[HTML][HTML] Fractional solitary wave solutions of the nonlinear higher-order extended KdV equation in a stratified shear flow: Part I

AR Seadawy - Computers & Mathematics with Applications, 2015 - Elsevier
The problem formulations of models for internal solitary waves in a stratified shear flow with
a free surface are presented. Solitary waves solutions are generated by deriving the …

[HTML][HTML] Exact solutions for the nonlinear extended KdV equation in a stratified shear flow using modified exponential rational method

A Althobaiti, S Althobaiti, K El-Rashidy, AR Seadawy - Results in Physics, 2021 - Elsevier
In this article, we study the nonlinear higher order of extended KdV equation with free
surface displacement. The modified exponential rational function method is used in order to …

Generation of surface waves by shear-flow instability

WR Young, CL Wolfe - Journal of fluid mechanics, 2014 - cambridge.org
We consider the linear stability of an inviscid parallel shear flow of air over water with gravity
and capillarity. The velocity profile in the air is monotonically increasing upwards from the …

A wave interaction approach to studying non-modal homogeneous and stratified shear instabilities

A Guha, GA Lawrence - Journal of fluid mechanics, 2014 - cambridge.org
Homboe (Geophys. Publ., vol. 24, 1962, pp. 67–112) postulated that resonant interaction
between two or more progressive, linear interfacial waves produces exponentially growing …

Transient energy growth of optimal streaks in parallel round jets

JI Jimenez-Gonzalez, P Brancher - Physics of Fluids, 2017 - pubs.aip.org
We present a linear optimal perturbation analysis of streamwise invariant disturbances
evolving in parallel round jets. The potential for transient energy growth of perturbations with …

Magnetorotational instability: nonmodal growth and the relationship of global modes to the shearing box

J Squire, A Bhattacharjee - The Astrophysical Journal, 2014 - iopscience.iop.org
We study magnetorotational instability (MRI) using nonmodal stability techniques. Despite
the spectral instability of many forms of MRI, this proves to be a natural method of analysis …

Triad resonance between gravity and vorticity waves in vertical shear

TD Drivas, S Wunsch - Ocean Modelling, 2016 - Elsevier
Weakly nonlinear theory is used to explore the effect of vertical shear on surface gravity
waves in three dimensions. An idealized piecewise-linear shear profile motivated by wind …

Optimal excitation of two dimensional Holmboe instabilities

NC Constantinou, PJ Ioannou - Physics of Fluids, 2011 - pubs.aip.org
Highly stratified shear layers are rendered unstable even at high stratifications by Holmboe
instabilities when the density stratification is concentrated in a small region of the shear …

Non-modal analysis of the diocotron instability: Cylindrical geometry

VV Mikhailenko, H June Lee, VS Mikhailenko… - Physics of …, 2013 - pubs.aip.org
The temporal evolution of the linear diocotron instability of the cylindrical annular plasma
column is investigated by employing the extension of the shearing modes methodology to …