scholarly journals Faraday instability in double-interface fluid layers

2019 ◽  
Vol 4 (4) ◽  
Author(s):  
Kevin Ward ◽  
Farzam Zoueshtiagh ◽  
Ranga Narayanan
Keyword(s):  
Fluid Layers ◽  
Faraday Instability

The stochastic mode of the Faraday instability of shallow fluid layers

2014 ◽  
Vol 106 (4) ◽  
pp. 44003 ◽  
Author(s):  
Marek Stastna ◽  
Francis J. Poulin
Keyword(s):  
Fluid Layers ◽  
Faraday Instability ◽  
Stochastic Mode

SOLUTE DISPERSION BETWEEN TWO PARALLEL PLATES CONTAINING POROUS AND FLUID LAYERS

2012 ◽  
Vol 15 (11) ◽  
pp. 1031-1047 ◽  
Author(s):  
J. Prathap Kumar ◽  
Jawali C. Umavathi ◽  
Ali J. Chamkha ◽  
Ashok Basawaraj
Keyword(s):  
Parallel Plates ◽  
Solute Dispersion ◽  
Fluid Layers

Ultrasonic Field Modeling in Multilayered Fluid Structures Using the Distributed Point Source Method Technique

2005 ◽  
Vol 73 (4) ◽  
pp. 598-609 ◽  
Author(s):  
Sourav Banerjee ◽  
Tribikram Kundu ◽  
Dominique Placko
Keyword(s):  
Point Source ◽  
Ultrasonic Field ◽  
Ultrasonic Transducers ◽  
Analytical Technique ◽  
Source Method ◽  
Fluid Systems ◽  
First Case ◽  
Fluid Layers ◽  
Distributed Point Source Method ◽  
Nonhomogeneous Fluids

In the field of nondestructive evaluation (NDE), the newly developed distributed point source method (DPSM) is gradually gaining popularity. DPSM is a semi-analytical technique used to calculate the ultrasonic field (pressure and velocity fields) generated by ultrasonic transducers. This technique is extended in this paper to model the ultrasonic field generated in multilayered nonhomogeneous fluid systems when the ultrasonic transducers are placed on both sides of the layered fluid structure. Two different cases have been analyzed. In the first case, three layers of nonhomogeneous fluids constitute the problem geometry; the higher density fluid is sandwiched between two identical fluid half-spaces. In the second case, four layers of nonhomogeneous fluids have been considered with the fluid density monotonically increasing from the bottom to the top layer. In both cases, analyses have been carried out for two different frequencies of excitation with various orientations of the transducers. As expected, the results show that the ultrasonic field is very sensitive to the fluid properties, the orientation of the fluid layers, and the frequency of excitation. The interaction effect between the transducers is also visible in the computed results. In the pictorial view of the resulting ultrasonic field, the interface between two fluid layers can easily be seen.

Interfacial instability in non-Newtonian fluid layers

2003 ◽  
Vol 15 (11) ◽  
pp. 3370-3384 ◽  
Author(s):  
N. J. Balmforth ◽  
R. V. Craster ◽  
C. Toniolo
Keyword(s):  
Newtonian Fluid ◽  
Interfacial Instability ◽  
Fluid Layers

Natural Convection in a Porous, Horizontal Cylindrical Annulus

1994 ◽  
Vol 116 (3) ◽  
pp. 621-626 ◽  
Author(s):  
J. P. Barbosa Mota ◽  
E. Saatdjian
Keyword(s):  
Natural Convection ◽  
Initial Conditions ◽  
Hysteresis Loops ◽  
Boussinesq Equations ◽  
Radius Ratio ◽  
Fine Grid ◽  
Cylindrical Annulus ◽  
Alternating Direction ◽  
Fluid Layers ◽  
Horizontal Cylinders

Natural convection in a porous medium bounded by two horizontal cylinders is studied by solving the two-dimensional Boussinesq equations numerically. An accurate second-order finite difference scheme using an alternating direction method and successive underrelaxation is applied to a very fine grid. For a radius ratio above 1.7 and for Rayleigh numbers above a critical value, a closed hysteresis loop (indicating two possible solutions depending on initial conditions) is observed. For a radius ratio below 1.7 and as the Rayleigh number is increased, the number of cells in the annulus increases without bifurcation, and no hysteresis behavior is observed. Multicellular regimes and hysteresis loops have also been reported for fluid layers of same geometry but several differences between these two cases exist.

Sign in / Sign up

Export Citation Format

Share Document