scholarly journals Global stability and nonlinear dynamics of wake flows with a two-fluid interface

2021 ◽  
Vol 915 ◽  
Author(s):  
Simon Schmidt ◽  
Outi Tammisola ◽  
Lutz Lesshafft ◽  
Kilian Oberleithner
Keyword(s):  
Nonlinear Dynamics ◽  
Global Stability ◽  
Fluid Interface ◽  
Wake Flows ◽  
Two Fluid

Abstract

A stability theorem for dissipative magnetohydrodynamic equilibria

1982 ◽  
Vol 60 (5) ◽  
pp. 640-643 ◽  
Author(s):  
J. Teichmann
Keyword(s):  
Global Stability ◽  
Sufficient Conditions ◽  
Stability Theorem ◽  
Lagrangian System ◽  
Dissipative Operators ◽  
Isentropic Flow ◽  
Liapunov Method ◽  
First Time ◽  
Two Fluid

The global stability of stationary equilibria of dissipative magnetohydrodynamics is studied using the direct Liapunov method. Sufficient conditions for stability of the linearized Euler–Lagrangian system with the full dissipative operators are given for the first time. The case of the two-fluid isentropic flow is discussed.

Transmission and reflection of a real sound beam at a two‐fluid interface

1989 ◽  
Vol 85 (S1) ◽  
pp. S93-S93
Author(s):  
Jacqueline Naze Tjøtta ◽  
Hans‐Christen Salvesen ◽  
Sigve Tjøtta
Keyword(s):  
Fluid Interface ◽  
Sound Beam ◽  
Two Fluid ◽  
Transmission And Reflection

Modal decomposition-based global stability analysis for reduced order modeling of 2D and 3D wake flows

2015 ◽  
Vol 81 (3) ◽  
pp. 178-191 ◽  
Author(s):  
Witold Stankiewicz ◽  
Marek Morzyński ◽  
Krzysztof Kotecki ◽  
Robert Roszak ◽  
Michał Nowak
Keyword(s):  
Stability Analysis ◽  
Global Stability ◽  
Reduced Order Modeling ◽  
Modal Decomposition ◽  
Reduced Order ◽  
Wake Flows ◽  
Global Stability Analysis ◽  
2D And 3D

Buoyancy flow at a two-fluid interface in a porous medium: Analytical studies

1988 ◽  
Vol 24 (4) ◽  
pp. 493-506 ◽  
Author(s):  
Göran Hellström ◽  
Chin-Fu Tsang ◽  
Johan Claesson
Keyword(s):  
Porous Medium ◽  
Fluid Interface ◽  
Buoyancy Flow ◽  
Analytical Studies ◽  
Two Fluid

Two-Fluid Electroosmotic Flow in Microchannels

2008 ◽  
Author(s):  
T. N. Wong ◽  
Y. Gao ◽  
C. Wang ◽  
C. Yang ◽  
N. T. Nguyen ◽  
...  
Keyword(s):  
Electric Field ◽  
Applied Electric Field ◽  
Electroosmotic Flow ◽  
Viscosity Ratio ◽  
Experimental Investigations ◽  
Fluid Interface ◽  
Surface Charges ◽  
Interface Position ◽  
Proposed Model ◽  
Two Fluid

This paper presents theoretical and experimental investigations of the pressure-driven two-liquid flow in microchannels with the electroosmosis effect. For a fully developed, steady state, laminar flow of two liquids combined the pressure gradient, electroosmosis and surface charges at the liquid-liquid interface, we have derived analytical solutions that relate the velocity profiles and flow rates to the liquid holdup, the aspect ratio of the microchannel, the viscosity ratio of the two liquids and the externally applied electric field. It was shown that adjusting the externally applied electric field could control the fluid interface position precisely. The prediction from the proposed model compares very well with measured data.

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