A non-barotropic continuum bubbly mixture model is used to study the one-dimensional cavitating ow through a converging-diverging nozzle. The nonlinear dynamics of the cavitation bubbles are modeled by the Rayleigh-Plesset equation. Analytical results show that the bubble/bubble interaction through the hydrodynamics of the surrounding liquid has important e ects on this con ned ow eld. One clea...

Flow separation and vortex shedding are some of the most common phenomena experienced by bluff bodies under relative motion with the surrounding medium. They often result in a recirculation bubble in regions with adverse pressure gradient, which typically reduces efficiency in vehicles and increases loading on structures. Here, the ability of an engineered coating to manipulate the large-scale ...

We develop a model for the rheology of a three-phase suspension of bubbles and particles in a Newtonian liquid undergoing steady flow. We adopt an 'effective-medium' approach in which the bubbly liquid is treated as a continuous medium which suspends the particles. The resulting three-phase model combines separate two-phase models for bubble suspension rheology and particle suspension rheology,...

Given the financial and economic damage that can be caused by collapse of an asset price bubble, it is critical importance to rapidly detect onset a crash once bubble has been identified. We develop real-time monitoring procedure for detecting episode in time series. adopt autoregressive framework, with regimes modelled explosive stationary dynamics, respectively. The first stage our approach m...

The dynamics of liquid-vapor phase-change in the nanosecond time-scale induced by pulsed-laser heating of a liquid on a solid sample is studied by means of optical reflectance and scattering measurements, and the piezoelectric detection technique. The Iiquids studied include water, ethanol, merhanol, EsopmPmpyl Alcohol P A ) , and mixtures of water and IPA. The threshold fluence for nucleation ...

ABSTRACT An Eulerian-Eulerian granular model was used to simulate the flow and heat transfer through a heatedgassolid fluidised bed. The primary objective of study determine whether adequately predicts chamber pressure drop, temperature, bed expansion predictions were assessed validated for various flow-regimes, namely fixed-bed, smooth, bubbling fluidisation, maximum fluidisation regimes. This...

This article presents a numerical simulation on subcooled flow boiling at high-pressure condition. An interface tracking method, VOSET, was used to handle the moving interface, and conjugate heat transfer between wall fluid included in model. In order consider evaporation microlayer below growing bubble, depletable micorlayer model employed. Our illustrated typical processes of including bubble...

Pool boiling surface modification by pin fin array has demonstrated a practical but effective cooling enhancement. Whilst the main challenge is to determine best configuration of dimensions and positioning, it known that result varies among working conditions. To obtain more general formulation, utterly vital deep understanding pool mechanism during phase-change process. This study aimed analyz...

A trivariate vector autoregression time series process, based on a present-value land price model, is used to decompose Iowa farmland prices into fundamental and non-fundamental components. A recent study, by Falk and Lee (1998), found that non-fundamental shocks are an important source of volatility in farmland prices and it was interpreted that these price movements were due to fads not specu...