نتایج جستجو برای: instability analysis

تعداد نتایج: 2892784  

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2001
L Meignin P Ern P Gondret M Rabaud

We report experimental results for the Kelvin-Helmholtz instability between two immiscible fluids in parallel flow in a Hele-Shaw cell. We focus our interest on the influence of the gap size between the walls on the instability characteristics. Experimental results show that the instability threshold, the critical wavelength, the phase velocity, and the spatial growth rate depend on this gap si...

Journal: :Pro-fono : revista de atualizacao cientifica 2010
Michelle Ferreira Guimarães Mara Suzana Behlau Ivone Panhoca

BACKGROUND Quality and frequency variability of adolescents' voice, during puberty, in different phonation tasks. AIM To analyze the vocal stability of adolescents in three different phonation tasks using a voice perceptual analysis. METHOD Participants were male students (n = 46 individuals), ranging in age from 13 to 15 years, from a public school in Campinas--SP. Voice samples were recor...

2016
Martin Cour Thomas Bénet Romain Hernu Marie Simon Thomas Baudry Philippe Vanhems Laurent Argaud

BACKGROUND Changeovers of norepinephrine infusion pumps (CNIPs) frequently lead to haemodynamic instability. The aim of this study was to identify risk factors for haemodynamic instability associated with CNIP, independent of the method used to perform the relay. METHODS We performed a prospective study, in a university-affiliated intensive care unit. Over a 1-year period, all adult patients ...

D. Toghraie, H. Nahvi, S. Oveisi

This work focuses on the dynamical behavior of carbon nanotubes, including vibration, wave propagation and fluid-structure interaction. In the present research, transverse vibration of nano fluid conveying carbon nanotubes is investigated. To this end, based on the nonlocal and strain-inertia gradient continuum elasticity theories and by using rod and Euler-Bernoulli beam models, the system’s d...

ژورنال: توانبخشی 2022

Background and aim. Identifying the factors affecting the reduction of ankle sprain complications as well as rapid recovery and prevention of re-injury after ankle sprain occurs are considered as the essentials. Therefore, the present meta- analysis investigate the challenge that which training modalities have a better effect on the balance and motor function of people with chronic ankle instab...

Journal: :J. Comput. Physics 2014
Gwénaël Gabard E. J. Brambley

The effect of flow over an acoustic liner is generally described by the Myers impedance condition. The use of this impedance condition in time-domain numerical simulations has been plagued by stability issues, and various ad hoc techniques based on artificial damping or filtering have been used to stabilise the solution. The theoretical issue leading to the ill-posedness of this impedance condi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - پژوهشکده ادبیات 1389

the present study reports an analysis of response articles in four different disciplines in the social sciences, i.e., linguistics, english for specific purposes (esp), accounting, and psychology. the study has three phases: micro analysis, macro analysis, and e-mail interview. the results of the micro analysis indicate that a three-level linguistic pattern is used by the writers in order to cr...

Journal: :Indonesian Journal of Electrical Engineering and Computer Science 2019

Journal: :نشریه دانشکده فنی 0
دکتر رضا محمودی

plastic instability which results in the localization and failure of sheet metals has been studied in equibiaxial stretching of commercial purity aluminium sheet. attention was focussed on two main industrial conditions of the material. these were representative of the materials that could be processed by the commercial batchannealing process (slow heating, long time) or by a continuous anneali...

2007
T. Passot

The neutral atomic interstellar medium (HI) is well known to be strongly magnetized. Since HI is a 2-phase medium the questions arise of what is the effect of the magnetic field on a 2-phase medium, how magnetic field affects thermal instability ? Here we summarize analytical and numerical results which have been obtained previously to investigate this question.

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