The gas–liquid–solid three‐phase moving beds could supply a potential solution for multiphase reactions with catalyst easily deactivated, and the flow regimes in it were studied by optical method and pressure drop measurement. Results showed that taking the trickle flow as the initial flow regime...
Gas-liquid flows in annulus channels are frequently encountered in the underbalanced drilling operation when the gasified drilling fluid is used. Accurate characterization of two-phase flow regimes in such conduits is critically important in order to gain a better understanding of the flow behaviours ...
Gas-liquid-solid flowMultiphase flowFlow regimes Gas holdupThe effect of solids concentration on the bubble to bubble-slug, bubble-slug to slug, and slug to churn flow transitions in gas-liquid-solid vertical flow has been studied using air, water, and glass beads in a 5 cm ID plexiglass ...
The results show that: It can be clearly seen from images that internal flow regimes make great influence on the spray behavior. Spray acoustic observation is an effective way to grasp the gas-liquid two phases flow behavior when they ejecting from the exit orifice. The acoustic analyzing in ...
Interfacial area concentration in gas–liquid bubbly to churn flow regimes in large diameter pipes International Journal of Heat and Fluid Flow, Volume 54, 2015, pp. 107-118 Xiuzhong Shen, Takashi Hibiki Experimental investigation on characteristic parameters of air–water slug flow in a vertical tu...
Depending upon the fluid system, pipe geometry and orientation, and operating conditions, diverse flow regimes can be observed. The switch between flow patterns is usually determined by visual inspection, combined with measures of fluctuation in pressure, liquid holdup or apparent electric conductivity....
Liquid and gas superficial velocities ranged from 0.03 to 1.5m/s, and 0.04 to 6.0m/s, respectively. Based on the analysis of the pressure at the riser base and liquid holdup at the riser top, the flow regimes observed were classified into four categories. In contrast with severe slugging ...
Shevtsova, Heat transfer through the interface and flow regimes in liquid bridge subjected to co-axial gas flow, Microgravity Sci. Technol. 24 (2012) 297-306.Gaponenko, Y., Shevtsova, V.: Heat transfer through the interface and flow regimes in liquid bridge subjected to co-axial gas flow....
The formulation predicts the development of flow regimes and various flow parameters without the need for maps, or the need to change closure relationships. To accomplish this, the model includes four fields, i.e. continuous and dispersed liquid, continuous and dispersed gas, as well as a set ...
The most common flow regimes that are encountered in a co-current flow of air–water within a vertical pipe are shown in Figure 6.2. At low gas volume fractions, the flow is an amalgam of individual ascending gas bubbles co-flowing with the liquid. This flow regime, referred to as the ...