An experimental study of small-amplitude drop oscillations in immiscible liquid systems

1982 ◽  
Vol 115 (-1) ◽  
pp. 453 ◽  
Author(s):  
E. Trinh ◽  
A. Zwern ◽  
T. G. Wang
Keyword(s):  
Experimental Study ◽  
Small Amplitude ◽  
Immiscible Liquid ◽  
Liquid Systems

An Experimental Study of the Forced Response of Pre- and Post-Critical Plates

1995 ◽  
Author(s):  
Kevin D. Murphy ◽  
Lawrence N. Virgin ◽  
Stephen A. Rizzi
Keyword(s):  
Experimental Study ◽  
Time Series ◽  
Lyapunov Exponent ◽  
Small Amplitude ◽  
Narrow Band ◽  
Power Spectra ◽  
Forced Response ◽  
Acoustic Excitation ◽  
Rectangular Plates ◽  
Auto Correlation

Abstract Experimental results are presented which characterize the dynamic response of homogeneous, fully clamped, rectangular plates to narrow band acoustic excitation and uniform thermal loads. Using time series, pseudo-phase projections, power spectra and auto-correlation functions, small amplitude vibrations are considered about both the pre- and post-critical states. These techniques are then employed to investigate the snap-through response. The results for snap-through suggest that the motion is temporally complex and a Lyapunov exponent calculation confirms that the motion is chaotic. Finally, a snap-through boundary is mapped in the (ω, SPL) parameter space separating the regions of snap-through and no snap-through.

A quantitative approach to assess the mixing ability of single-screw extruders for polymer extrusion

2012 ◽  
Vol 32 (2) ◽  
Author(s):  
Natália Domingues ◽  
António Gaspar-Cunha ◽  
José António Covas
Keyword(s):  
Immiscible Liquid ◽  
Operating Conditions ◽  
Mixing Efficiency ◽  
Single Screw ◽  
Liquid Systems ◽  
Single Screw Extruders ◽  
Mixing Ability ◽  
The Individual ◽  
Dispersive Mixing ◽  
Screw Extruders

Abstract Models to predict the evolution of the morphology of immiscible liquid-liquid systems and of solid agglomerates dispersion in single-screw extruders were adapted to compute global distributive and dispersive mixing indices. Using these indices, the direct assessment of the mixing ability of a given screw or a comparison of distinct screws becomes readily available. In the case of liquid-liquid systems, the degree of distributive mixing is computed from the extent of deformation of the individual drops, whereas the degree of dispersive mixing is determined by the reduction in drop size. For solid-liquid systems, distributive mixing is quantified by a normalized Shannon entropy, whereas dispersive mixing is defined from the extent of size reduction. The effect of material properties, operating conditions, and geometry of the screw and die is investigated. Finally, the indices are used to determine (via optimization) the operating conditions and the screw geometry that maximize the mixing efficiency.

Experimental Study on Micromixing Characteristics of Coaxial Mixer in Solid–Liquid Systems

2021 ◽  
Vol 60 (39) ◽  
pp. 14318-14328
Author(s):  
Chao Yang ◽  
Ning Sun ◽  
Ziqiang Zhang ◽  
Baoqing Liu
Keyword(s):  
Experimental Study ◽  
Liquid Systems ◽  
Solid Liquid

scholarly journals EXPERIMENTAL STUDY ON FATIGUE CHARACTERISTICS OF LEAD RUBBER BEARINGS UNDER REPEATED SMALL-AMPLITUDE LOADING

2015 ◽  
Vol 21 (48) ◽  
pp. 639-644 ◽  
Author(s):  
Osamu KOUCHIYAMA ◽  
Tomoyuki KANDA ◽  
Yasuo TAKENAKA ◽  
Mitsuru MIYAZAKI ◽  
Masahiro NAKAMURA ◽  
...  
Keyword(s):  
Experimental Study ◽  
Small Amplitude ◽  
Lead Rubber Bearings ◽  
Fatigue Characteristics ◽  
Rubber Bearings

Multiple Node Breakup of a Liquid Jet Into Drops in Another Immiscible Liquid

2002 ◽  
Author(s):  
Shunji Homma ◽  
Jiro Koga ◽  
Shiro Matsumoto ◽  
Gre´tar Tryggvason
Keyword(s):  
Stokes Equations ◽  
Immiscible Liquid ◽  
Capillary Waves ◽  
Navier Stokes ◽  
Unstable Wave ◽  
Liquid Jet ◽  
Navier Stokes Equations ◽  
Axisymmetric Jet ◽  
Multiple Node ◽  
Liquid Systems

We investigate numerically the breakup of an axisymmetric jet into drops in liquid-liquid systems, specifically focus on multiple node breakup, where more than one node of the most unstable wave becomes one drop. The unsteady Navier-Stokes equations for incompressible Newtonian fluids are solved with a Front-Tracking / Finite Difference method. Various combinations of the non-dimensional numbers (Re = 80, 160, 320; We = 5, 8; Fr = 4, 8, 32, ∞) are examined for constant ratios of density (ρc, ρj = 1.25) and viscosity (µc, µj = 1). Capillary waves grow on the jet surface and the multiple node breakup is observed in all cases examined. A “shoulder” is observed on the jet right behind the bulb when the double-node breakup occurs. Unlike the breakup of a jet in air, vortical motions in the external fluid affect the breakup process.

Sign in / Sign up

Export Citation Format

Share Document