Results 11 to 20 of about 843,130 (317)

Upper Bounds for the Complex Growth Rate of a Disturbance in Ferrothermohaline Convection

open access: yesStudia Geotechnica et Mechanica, 2022
It is proved analytically that the complex growth rate σ= σr+iσi (σr and σi are the real and imaginary parts of σ, respectively) of an arbitrary oscillatory motion of neutral or growing amplitude in ferrothermohaline convection in a ferrofluid layer for ...
Ram Kaka   +3 more
doaj   +1 more source

Stability characteristics of the 500 mw Indian PFBR [PDF]

open access: yesNuclear Technology and Radiation Protection, 2015
After the successful operation of the fast breeder test reactor for over two decades, India is now nearing the completion of a 500 MW (electrical) prototype fast breeder reactor. This commercial scale power reactor is a sodium-cooled, pool-type,
Anuraj Vijayan L.   +2 more
doaj   +1 more source

Unstable Convection in a Vertical Double–Layer Porous Slab

open access: yesEnergies, 2023
A convective stability analysis of the flow in a vertical fluid-saturated porous slab made of two layers with different thermophysical properties is presented. The external boundaries are isothermal with one of them impermeable while the other is open to
Stefano Lazzari   +3 more
doaj   +1 more source

On linear stability and syzygy stability

open access: yesAbhandlungen aus dem Mathematischen Seminar der Universität Hamburg, 2022
AbstractIn previous works, the authors investigated the relationships between linear stability of a generated linear series |V| on a curve C, and slope stability of the syzygy vector bundle $$M_{V,L} := \ker (V \otimes \mathcal {O}_C \rightarrow L)$$ M
Castorena, Abel   +2 more
openaire   +2 more sources

Simplified Mathieu’s equation with linear friction [PDF]

open access: yesINCAS Bulletin, 2016
Consider a second order differential linear periodic equation. The friction coefficient is real positive constant. Some transformation of the solution and its first derivative allow writing two-order differential equations with void friction coefficients.
Nicolae MARCOV
doaj   +1 more source

On the Stabilization of Linear Systems [PDF]

open access: yesProceedings of the American Mathematical Society, 1964
be "stabilizable." Here A is an n by n matrix, x and b are n by 1 column matrices (or vectors), p is a 1 by n row matrix and q and u are scalars. We shall assume that the elements of all these may be complex numbers. The vector x can be interpreted physically as the output of a linear system characterized by the matrix A.
openaire   +1 more source

Onset of Viscous Dissipation Instability in Plane Couette Flow with Temperature-Dependent Viscosity

open access: yesEnergies, 2023
The conditions for the onset of dissipation thermal instability with temperature-dependent viscosity in the plane Couette flow of a Newtonian fluid are analyzed. The studied system consists of a horizontal fluid layer confined between an adiabatic (fixed)
Alioune Sene   +3 more
doaj   +1 more source

Numerical Investigation on Flow Transition through a Curved ‎Square Duct with Negative Rotation [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2021
Application of the rotational phenomena in the curved ducts plays an important role in many engineering areas, so researchers are attracted to innovate something new in this area nowadays.
Mohammad Hasan   +4 more
doaj   +1 more source

A revised model for the effect of nanoparticle mass flux on the thermal instability of a nanofluid layer

open access: yesDemonstratio Mathematica, 2021
A revised model of the nanoparticle mass flux is introduced and used to study the thermal instability of the Rayleigh-Benard problem for a horizontal layer of nanofluid heated from below.
Alharbi Ozwah S., Abdullah Abdullah A.
doaj   +1 more source

Global and Koopman modes analysis of sound generation in mixing layers [PDF]

open access: yes, 2013
It is now well established that linear and nonlinear instability waves play a significant role in the noise generation process for a wide variety of shear flows such as jets or mixing layers.
X. Gloerfelt   +7 more
core   +1 more source

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