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When wind turbine is running, and when the vortex is generated by the airfoil, it will generate a bound vortex with equal intensity with the vortex but by the opposite rotating direction around the wing. In this paper, by using the commercial software Fluent, the horizontal axis of the radius of 0.7m wind turbine's three-dimensional unsteady LES near wake were calculated, and the rotating efficiency...
The technology of leak protection and leak control while drilling through physical methods can be successfully applied based on studying the annulus' behaviour of the whole down hole flow field. In this paper, the model of sealing down hole while drilling through physical methods which will be used for CFD simulation is eatablished through reasonable simplification. Then running numerical simulation...
Based on the Navier-Stokes equations for viscous, incompressible fluid and VOF method, the numerical experiment platform of oil containment by rigid floating boom in wave is established, utilizing the commercial CFD software FLUENT, and the waves are generated by defining the velocity of water particle on the inlet boundary. The volume of fluid (VOF) model is used to distinguish the three immiscible...
Miniaturization is the trend in analytical chemistry and life sciences. In the past two decades, miniaturization of fluid handling and fluid analysis has been emerging in the interdisciplinary research field of microfluidics. Some of the microfluidic applications are drug delivery, lab-on-a-chip, pharmaceutical development, synthesis of amino acids etc. Most of these applications are used for biochemistry...
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...
A new kind of oil-mist collection is design to reduce the harm of oil-mist produced by cold-former to people and environment. This paper stimulates the flow field of air amplifier by using Fluent and obtains the speed vector by adopting the standard turbulence model and supplying air from different speed. It is validated that air amplifier is a perfect part of the oil-mist collection.
With the computational fluid dynamics software FLUENT the flow field of flue gas from one 75 t/h circulating fluidized bed combustion boiler was simulated. The results showed that when air distribution was not taken into account, the flow of the two flue gases in the bag filter were not uniform. The flow field of coal flue gas was more disordered than that of biomass, but the majority of them moved...
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