Characteristics of air-water flow in an emptying tank under different conditions

Liang, Jialing; Yi, Ma; Zheng, Yi

doi:10.1016/j.taml.2021.100300

Cited by 4 publications

(2 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A key difference between that study and the work presented here is that the tubes did not empty via a glugging process, but rather drained by the introduction of a long Taylor finger (when not pierced) or through full bore draining when d p = D. However, they did find that, for a range of piercing sizes such that d p < D, a coupling of the mechanisms could be achieved. With respect to even more recent than the work of Kumar et al, Liang et al [11] reported on the emptying of tanks with cylindrical and elliptical outlets and found that venting the tank could produce different trends in h(t). It is unclear from their study whether they observed any conditions for which the emptying process transitioned from jetting to glugging.…”

Section: Gluggingmentioning

confidence: 99%

The Emptying of a Perforated Bottle: Influence of Perforation Size on Emptying Time and the Physical Nature of the Process

Schwefler,

Nienaber,

Mayer

2023

Fluids

View full text Add to dashboard Cite

An inverted bottle empties in a time Te,0 through a process called “glugging”, whereby gas and liquid compete at the neck (of diameter DN). In contrast, an open-top container empties in a much shorter time Te through “jetting” due to the lack of gas–liquid competition. Experiments and theory demonstrate that, by introducing a perforation (diameter dp), a bottle empties through glugging, jetting, or a combination of the two. For a certain range of dp/DN, the perforation increases the emptying time, and a particular value of dp/DN is associated with a maximum emptying time Te,max. We show that the transition from jetting to glugging is initiated by the jet velocity reaching a low threshold, thereby allowing a slug of air entry into the neck that stops jetting and starts the glugging. Once initiated, the glugging proceeds as though there is no perforation. Experimental results covered a range of Eötvös numbers from Eo∼ 20–200 (equivalent to a range of DN/Lc∼ 4–15, where Lc is the capillary length). The phenomenon of bottle emptying with a perforation adds to the body of bottle literature, which has already considered the influence of shape, inclination, liquid properties, etc.

show abstract

Section: Gluggingmentioning

confidence: 99%

The Emptying of a Perforated Bottle: Influence of Perforation Size on Emptying Time and the Physical Nature of the Process

Schwefler,

Nienaber,

Mayer

2023

Fluids

View full text Add to dashboard Cite

show abstract

“…Several experimental studies on liquid drainage through a particle bed under laboratory conditions have been conducted. This includes the work by Fukutake and Okabe 7) on experiments in a cylindrical vessel with glass beads with a single viscous fluid to emulate the flow of slag in the industrial scale furnaces, Luomala et al 8) on the flow of water through a particle bed, Vango et al 9) on the drainage of a water through a particle bed under both settled and floating bed conditions, Liang et al 10) on water being drained from the bottom of a rectangular tank with both open and closed top surface, and Zhang et al 11) on the drainage of water through a floating particle bed with rotational and translational oscillations. Most of this research studied drainage effects using a single liquid only.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study on Tapping of Two Liquids through a Single Tap-Hole

Loomba,

Olsen,

Reynolds

et al. 2023

ISIJ Int.

View full text Add to dashboard Cite

The production of industrial metals in pyrometallurgical smelting furnaces is central to modern industry. Tapping of metal and slag from smelting furnaces is a complex and difficult process. Any variations from tap to tap reduce predictability and impact the planning of downstream logistics. Tapping of metal and slag can be generalized as drainage of two immiscible liquids through a particle bed. In the present paper this is studied by both laboratory experiments and numerical modeling of water and oil drainage from a tank. The results show that the numerical model and physical experiment are consistent. This provides confidence that the numerical models can be applied to quantify tapping from metallurgical furnaces.

show abstract

Draining of a water tank under inadequate ventilation conditions

Zheng,

Xiao,

Zhu

et al. 2024

Physics of Fluids

View full text Add to dashboard Cite

Draining processes through a bottom orifice of a water tank under different ventilation conditions were studied experimentally. The water pressure fluctuations at the tank bottom and the air pressure in the headspace were measured simultaneously, based on which the air–water flow features were analyzed. From the experiments, three drainage modes were identified, including a periodic draining mode with periodic bubble generation at the orifice, a full-flow draining mode without bubble formation in the tank, and a combined draining mode with bubbles generated when the water level fell to a certain water depth. The drainage efficiencies varied among the three modes, resulting from the different conditions of bubble generation at the bottom orifice and the negative pressure in the headspace due to limited ventilation. The mechanism for bubble generation at the orifice was analyzed theoretically, and the effect of the negative pressure on drainage efficiency was discussed. The transition criteria among the modes were developed by a mathematical model. This study provides new knowledge on the drainage from a water tank under different degrees of ventilation.

show abstract

Characteristics of air-water flow in an emptying tank under different conditions

Cited by 4 publications

References 13 publications

The Emptying of a Perforated Bottle: Influence of Perforation Size on Emptying Time and the Physical Nature of the Process

The Emptying of a Perforated Bottle: Influence of Perforation Size on Emptying Time and the Physical Nature of the Process

Experimental and Numerical Study on Tapping of Two Liquids through a Single Tap-Hole

Draining of a water tank under inadequate ventilation conditions

Contact Info

Product

Resources

About