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The objective of this study is to predict the pressure gradient for gas-liquid bubbly flow along a vertical pipeline by using a Computational Fluid Dynamics (CFD) numerical simulation. The CFD simulation is compared with experimental data obtained from the literature, which involves a vertical pipe with a length of 1.52 m and an inner diameter of 11.68 mm. Empirical correlations available in the literature...
Spraying water into high temperature high pressure gas is a two phase flow. An Euler-Lagrange method was used to simulate the two phase flow with evaporation. The gas phase is simulated by solving the Navier-Stokes equations using RK(Runge-Kutta)-AUSM+(Advection Upstream Splitting Method) scheme. A particle trajectory model was used to represent the liquid phase. The source terms were added to the...
A two-fluid model was adopted to simulate the three-dimensional gas-liquid flow in an aeration tank. The different operation parameters of aeration tank were simulated with the model, and the gas-liquid flow behavior in aeration tank was analyzed. The simulation results agree qualitatively with the operating conditions in literature and actual plant. Application of the model was demonstrated by analyzing...
A two-fluid model was adopted to simulate the three-dimensional gas-liquid flow in an aeration tank. During the modeling, different process parameters of aeration tank was simulated, and the gas-liquid flow behavior in aeration tank was analyzed. The CFD simulation and PIV measurement were both used to analyze the flow field in the aeration tank. The result shows that with the increasing of the depth,...
The internal ring matrix distribution of many special ceramic porous medium tubes on a circular plate constitutes an adsorbent device, which can retain nanoparticles aerosol agglomerate by the way of collision, adsorption and diffusion in the process of mass transfer. In this paper, the behavior of industrial flue dust diffusion in the ceramic porous medium device is researched by computational fluid...
The CFD (computational fluid dynamics) software-FLUENT was used to simulate under different stirring speed. The turbulence kinetic energy ??, the effective energy dissipation ?? and spiral vortex micro dimension ?? were introduced as criterions to evaluate flocculation effects and interpret the complex phenomenon in the course of flocculation.Jar test and numerical simulation were conducted to study...
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