Oil-water two-phase flow widely exists and its measurement is of significance in oil well logging, oil transportations and etc. One of the techniques in common use in oil-water two-phase flowrate measurement is the Differential Pressure (DP) meters combining a theoretic model connecting the mass flowrate of the mixture with the differential pressures generated by the throttling element inside t...

In this paper, a unified gas-kinetic wave-particle scheme (UGKWP) for the disperse dilute gas-particle multiphase flow is proposed. The gas phase always in hydrodynamic regime. However, particle covers different regimes from trajectory crossing to wave interaction with variation of local Knudsen number. UGKWP an appropriate method capturing multiscale transport mechanism through its coupled for...

gas-lift pumps are devices for lifting liquid phase incorporating the gas phase to be injected in the bottom of liquid column. they are widely used in various industrial applications such as oil extracting in petroleum industries. gas-liquid flow being the main part of the flow through these systems, flowing in vertical pipes of gas-lift pumps has different regimes namely bubbly, slug, churn an...

the directional response and roll stability characteristics of a partly filled tractor semi-trailer vehicle, with cylindrical tank, are investigated in various maneuvers. the dynamic interaction of liquid cargo with the tractor semi-trailer vehicle is also evaluated by integrating a dynamic slosh model of the partly filled tank with five-degrees-of-freedom of a tractor semi-trailer tank model. ...

in the course of expansion in turbines steam nucleates to become a two-phase mixture, the liquid consisting of a very large number of extremely small droplets carried by the vapor. formation and subsequent behaviour of the liquid lowers the performance of turbine wet stages. the calculations were carried out assuming that the flow is two dimensional, compressible, turbulent and viscous. a class...

Dissipative particle dynamics (DPD) and its generalization – the fluid particle model (FPM) represent the “fluid particle” approach for simulating fluid-like behavior in the mesoscale. Unlike particles from molecular dynamics (MD) method, the “fluid particle” can be viewed as a “droplet” consisting of liquid molecules. In FPM, “fluid particles” interact by both central and non-central, short-ra...

Nature of intraphase interaction lies in the aerodynamics of closely-spaced bodies at their common airflow. Any spatial configuration occurs in a big ensemble with occasional particle positioning. Restricting the attention to “close” interactions, it is possible to reduce the problem to pairwise interactions, where only two main types are selected both by geometrical and physical features. From...

The wavelet transform is applied to experimental pressure fluctuations in swirling gas-particle two-phase flows in this paper, to identify and interpret flow pattern transitions in both Fourier and physical spaces. From randomlike pressure fluctuations the characteristic of swirling gas-particle twophase flows can be extracted, and the relationship between the wall pressure fluctuation and the ...