A new method of entrainment fraction measurement in annular gas–liquid flow in a small diameter vertical tube

Han, Huawei; Gabriel, Kamiel; Wang, Zhaolin

doi:10.1016/j.flowmeasinst.2007.01.001

Cited by 16 publications

(3 citation statements)

References 17 publications

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“…The above set of discretized algebraic equations is solved by the segregated method. Studies showed that it provides best performance in separated flows and flows with complex secondary flow [20]. This is provided it is properly coupled with a two-layer all y þ wall treatment near the 'wall' boundary condition.…”

Section: Numerical Simulationsmentioning

confidence: 99%

The study of height variation on outdoor ventilation for Singapore's high-rise residential housing estates

Lee

Jusuf

Wong

2013

International Journal of Low-Carbon Technologies

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This article is concerned with external ventilation levels within a multi-story Housing and Development Board (HDB) residential estate, focusing toward a deeper understanding of wind flow with respect to different levels of height variation (HV). This study analyzed through parametric study, using numerical simulations with the realizable k -1 turbulence model, the various scenarios of HV within a typical residential HDB estate or precinct. It is found that external wind flow within the precinct for both the pedestrian and mid-height levels are affected differently by the HV value. Some rules of thumbs can be established for HVs in the efficient use of outdoor ventilation.

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Section: Numerical Simulationsmentioning

confidence: 99%

The study of height variation on outdoor ventilation for Singapore's high-rise residential housing estates

Lee

Jusuf

Wong

2013

International Journal of Low-Carbon Technologies

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“…Following the completion of PIV measurements, a specialised mechanical arrangement (as depicted in Fig. 2) was employed to effectively segregate entrained droplets from the annular film, guided by the insights presented in references [20,26]. Drawing from the visualised film, a narrower pipe with an external diameter of 90 mm was introduced into the primary pipe.…”

Section: Methodsmentioning

confidence: 99%

Experimental Study of Developing Free-Falling Annular Flow in a Large Scale Vertical Pipe

Xue¹,

Stewart²,

Kelly³

et al. 2023

Preprint

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“…The results showed that the entrained liquid fraction could associate with the initial height, the superficial gas velocity, the liquid surface tension, and the gravitational acceleration. Han et al . measured the volume flow rate of gas bubbles using optical sensor technology.The entrainment of liquid ejection in a vertical tube was studied, and entrainment rate was forecasted with Weber number.…”

Section: Introductionmentioning

confidence: 99%

Study on droplet entrainment in the composite scrubbing–cooling chamber

Wang

Yan

Guo

et al. 2017

Asia-Pacific J Chem Eng

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A cold model experimental device was established for studying droplet entrainment in the composite scrubbing-cooling chamber. The effect of the superficial gas velocity, the initial liquid flow velocity of the nozzle, and the radial position of nozzles on droplet entrainment was investigated. The experimental results show that the droplet entrainment increases with the increase of the superficial gas velocity and the flow rate of falling film, but its profile is quite mean in the radial direction in the chamber. The droplet entrainment decreases by about 40% when the number of nozzles increases from two to four. Increasing the nozzle number can make the droplet well distributed and reduce droplet entrainment. Based on the experiment data, an empirical correlation for droplet entrainment fraction is also obtained, as E ∝ Re 1.92 ·We 0.52 . The optimization study for the structure of the scrubbing-cooling chamber can provide some guidance for the industrial application.

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A new method of entrainment fraction measurement in annular gas–liquid flow in a small diameter vertical tube

Cited by 16 publications

References 17 publications

The study of height variation on outdoor ventilation for Singapore's high-rise residential housing estates

The study of height variation on outdoor ventilation for Singapore's high-rise residential housing estates

Experimental Study of Developing Free-Falling Annular Flow in a Large Scale Vertical Pipe

Study on droplet entrainment in the composite scrubbing–cooling chamber

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