Numerical and experimental examination of swirl flow in a cylindrical container with rotating lids

Doby, Michael J.; Nowakowski, Andrzej; Nowak, Edward; Dyakowski, T.

doi:10.1016/j.mineng.2006.12.010

Cited by 8 publications

(5 citation statements)

References 27 publications

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“…The cyclone − is a centrifugal separation and classification apparatus, being developed for different industrial needs. It is used for solid–solid and solid–liquid hydrocyclone separation − in a liquid-phase continuum; by means of the tangential-fluid and solid-particle feeding, a strong rotational movement takes place inside the device because of the centrifugal force. Thus, in this field, the solid particles are suspended in the fluid and tend to move toward the walls.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of the Effect of the Ratio of the Vortex-Finder Diameter to the Spigot Diameter on the Steady State of the Air Core in a Hydrocyclone

Song

Sun

et al. 2013

Ind. Eng. Chem. Res.

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The air core is an important phenomenon in a hydrocyclone. The steady state of the air core plays a key role in the performance and separation efficiency of a hydrocyclone. The unsteady structure of the air core reflects the unsteady flow field and exacerbates this unsteadiness, thus affecting the steadiness and homogeneity of the flow field, which will lead to lower separation efficiency. The effects of the ratio of the vortex-finder diameter to the spigot diameter (D o /D u ) on the steady state of the air core were studied by computational fluid dynamics in this paper. In this approach, the Reynolds stress model used to describe the turbulent fluid flow and the volume-of-fluid multiphase model simulated the interface between the liquid and air core. The results show that the steady state of the air core is mainly decided byD o /D u . Different ranges of D o /D u lead to different steady states of the air core. No air core appeared inside the hydrocyclone with a D o /D u of 1.2. The discontinuous ones occur when D o /D u enlarges to 1.6 and 1.8. Through the continuous air core grown in the hydrocyclone with a D o /D u larger than 1.8, the rules of the steady state were different. In addition, the operation conditions of the inlet velocity did not change the trend of the steady state of the air core in a certain hydrocyclone.

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Section: Introductionmentioning

confidence: 99%

Numerical Investigation of the Effect of the Ratio of the Vortex-Finder Diameter to the Spigot Diameter on the Steady State of the Air Core in a Hydrocyclone

Song

Sun

et al. 2013

Ind. Eng. Chem. Res.

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“…The validation study should concern the internal flow field. Doby et al (2007) investigated the swirl flow mechanism in a cylindrical container. They constructed apparatus to enable the lids of a cylinder to be rotated.…”

Section: Experimental Validationmentioning

confidence: 99%

The Numerical Modelling of the Flow in Hydrocyclones

Nowakowski

Doby

2008

KONA

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“…We just give a brief literature review here. Hydrocyclones have been comprehensively studied numerically by Nowakowski and Doby (2008), Doby et al (2005) and Doby et al (2007). These studies highlighted the basic mechanisms of a swirling flow.…”

Section: Introductionmentioning

confidence: 99%

PIV of swirling flow in a conical pipe with vibrating wall

Xu,

Zhang,

Nicolleau

et al. 2018

Preprint

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Swirling flows in conical pipe can be found in a number of industrial processes, such as hydrocylone, separator and rotating machinery. It has been found that wall oscillations can reduce the drag in water channel and pipe flows, but there is no study of a swirling flow combined with a vibrating wall in conical pipes, though there are many applications of such combination in engineering processes. A two-dimensional particle image velocimetry (PIV) is used to measure the swirling flow field in a water conical pipe subjected to a periodic vibrating wall for a Reynolds number 3800. The flow velocity statistics are studied under different vibration frequencies corresponding to Strouhal numbers from 60 to 242. The instantaneous axial and vertical velocity in one vibrating period, the mean velocities, and Reynolds stresses were obtained. The results show the existence of an intermediary recirculation cell in the middle of the pipe. They also show that the vibration improves the symmetry for the swirling flow while decreasing dramatically the velocity fluctuation.

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Numerical and experimental examination of swirl flow in a cylindrical container with rotating lids

Cited by 8 publications

References 27 publications

Numerical Investigation of the Effect of the Ratio of the Vortex-Finder Diameter to the Spigot Diameter on the Steady State of the Air Core in a Hydrocyclone

Numerical Investigation of the Effect of the Ratio of the Vortex-Finder Diameter to the Spigot Diameter on the Steady State of the Air Core in a Hydrocyclone

The Numerical Modelling of the Flow in Hydrocyclones

PIV of swirling flow in a conical pipe with vibrating wall

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