Results 231 to 240 of about 4,023,824 (301)

Numerical model for the investigation of hydrodynamic stability of shear flows in pipes of elliptic cross-section

, 2019
A numerical model for the investigation of hydrodynamic stability of viscous incompressible shear flows in pipes of constant elliptic cross-section is proposed.
K. V. Demyanko
semanticscholar   +1 more source

Single phase nanofluids in fluid mechanics and their hydrodynamic linear stability analysis

Comput. Methods Programs Biomed., 2019
BACKGROUND AND OBJECTIVE The hydrodynamic stability of nanofluids of one phase is investigated in this paper based on linear stability theory. The overall thrust here is that the linear stability features of nanofluids can be estimated from their ...
M. Turkyilmazoglu
semanticscholar   +1 more source

Stability of a hydrodynamic discontinuity

Physica Scripta, 2014
While looking from a far field at a discontinuous front separating incompressible ideal fluids of different densities, we identify two qualitatively different behaviors of the front—unstable and stable—depending upon whether the energy flux produced by the perturbed front is large or small compared to the flux of kinetic energy across the planar front.
Snezhana I Abarzhi, Yasuhide Fukumoto, Leo P Kadanoff   +2 more
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Generalised entropy production and hydrodynamic stability [PDF]

Physics Letters, 1963
A generalized from of an evolution criterion for macroscopic systems with time-independent boundary conditions is given. It includes mechanical processes, such as convection, as well as the components of the entropy production. The variational method is tested in the stability of a horizontal layer of fluid at rest and heated from below.
Glansdorff, Paul, Prigogine, Ilya
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Concept of hydrodynamic stability

2012
In the beginning of this chapter, based on elementary physical example, a general idea of stability of motion with respect to disturbances is introduced. Then it is conceptualized for fluid dynamic applications. Stability of fluid flows is categorized in regards of the behavior of kinetic energy of a disturbance in time and space.
Andrey V. Boiko, Alexander V. Dovgal, Genrih R. Grek, Victor V. Kozlov   +3 more
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Bifurcation in Nonlinear Hydrodynamic Stability

SIAM Review, 1975
The appearance of secondary motions in a viscous fluid field can be understood to some extent as a bifurcation phenomenon with exchange of stability between the basic and the secondary flow. This article summarizes the main mathematical results of bifurcation and stability in hydrodynamic stability theory so far obtained.
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An Introduction to Hydrodynamic Stability

2010
In this chapter, our objective is twofold: (1) to describe common physical mechanisms which cause flows to become unstable, and (2) to introduce recent viewpoints on the subject. In the former, we present some well-known instabilities, and also discuss how surface tension and viscosity can act as both stabilisers and destabilisers.
Anubhab Roy, Rama Govindarajan
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Thermal radiation and surface roughness effects on the thermo-magneto-hydrodynamic stability of alumina–copper oxide hybrid nanofluids utilizing the generalized Buongiorno’s nanofluid model

Journal of Thermal Analysis and Calorimetry, 2020
Abderrahim Wakif, Ali J. Chamkha, Thirupathi Thumma, I. L. Animasaun, R. Sehaqui   +4 more
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Computing Problems in Nonlinear Hydrodynamic Stability

The Physics of Fluids, 1969
Questions arising in nonlinear hydrodynamic stability such as the calculation of an equilibrium flow field when the basic flow is unstable, wavenumber selection, and successive instabilities are considered for the classical problem of flow between concentric rotating cylinders. Recent numerical and analytical work dealing with calculation of the Taylor
DiPrima, R. C., Rogers, E. H.
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Classical Hydrodynamic Stability

1985
Let Ω ⊂ R 3 be a domain (i.e. an open connected set) in which the flow of an incompressible viscous Newtonian fluid, acted upon by the body force f(x, t) takes place.
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