Experimental investigation of air entrainment by vertical plunging liquid jet

Shuichiro Miwa; Takahiro Moribe; Kohei Tsutstumi; Takashi Hibiki

doi:10.1016/j.ces.2018.01.037

Experimental investigation of air entrainment by vertical plunging liquid jet

Shuichiro Miwa^*
, Takahiro Moribe
, Kohei Tsutstumi
, Takashi Hibiki

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

39 Citations (Scopus)

Abstract

This paper presents experimental results and predictive model on the air entrainment flow rate due to the vertical plunging liquid jet. Three types of fluids with different physical properties were utilized as a working fluid for the experiment. Air entrainment flow rate was measured using soap meniscus method and various geometrical parameters including nozzle diameter (13–16 mm), fall height (105–210 mm), pool depth (30–180 mm), and angle of the bottom pool surface (0–75°) were changed to investigate the effects on air entrainment rate. Plunging tube was installed around the falling jet and impinging point. For the current experimental conditions, it was found that the air entrainment rate depends on the product of Weber number and Laplace length scale, and new predictive model on air entrainment ratio, defined as the entrained air flow rate divided by impinging jet flow rate, is proposed. The proposed model is capable of predicting air entrainment ratio at a mean absolute relative deviation of 15.9% at the given experimental conditions.

Original language	English
Pages (from-to)	251-263
Journal	Chemical Engineering Science
Volume	181
DOIs	https://doi.org/10.1016/j.ces.2018.01.037
Publication status	Published - 18 May 2018
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

Air entrainment
Liquid jet
Plunging jet
Two-phase flow

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title = "Experimental investigation of air entrainment by vertical plunging liquid jet",

abstract = "This paper presents experimental results and predictive model on the air entrainment flow rate due to the vertical plunging liquid jet. Three types of fluids with different physical properties were utilized as a working fluid for the experiment. Air entrainment flow rate was measured using soap meniscus method and various geometrical parameters including nozzle diameter (13–16 mm), fall height (105–210 mm), pool depth (30–180 mm), and angle of the bottom pool surface (0–75°) were changed to investigate the effects on air entrainment rate. Plunging tube was installed around the falling jet and impinging point. For the current experimental conditions, it was found that the air entrainment rate depends on the product of Weber number and Laplace length scale, and new predictive model on air entrainment ratio, defined as the entrained air flow rate divided by impinging jet flow rate, is proposed. The proposed model is capable of predicting air entrainment ratio at a mean absolute relative deviation of 15.9\% at the given experimental conditions.",

keywords = "Air entrainment, Liquid jet, Plunging jet, Two-phase flow",

author = "Shuichiro Miwa and Takahiro Moribe and Kohei Tsutstumi and Takashi Hibiki",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].",

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AU - Miwa, Shuichiro

AU - Moribe, Takahiro

AU - Tsutstumi, Kohei

AU - Hibiki, Takashi

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2018/5/18

Y1 - 2018/5/18

N2 - This paper presents experimental results and predictive model on the air entrainment flow rate due to the vertical plunging liquid jet. Three types of fluids with different physical properties were utilized as a working fluid for the experiment. Air entrainment flow rate was measured using soap meniscus method and various geometrical parameters including nozzle diameter (13–16 mm), fall height (105–210 mm), pool depth (30–180 mm), and angle of the bottom pool surface (0–75°) were changed to investigate the effects on air entrainment rate. Plunging tube was installed around the falling jet and impinging point. For the current experimental conditions, it was found that the air entrainment rate depends on the product of Weber number and Laplace length scale, and new predictive model on air entrainment ratio, defined as the entrained air flow rate divided by impinging jet flow rate, is proposed. The proposed model is capable of predicting air entrainment ratio at a mean absolute relative deviation of 15.9% at the given experimental conditions.

AB - This paper presents experimental results and predictive model on the air entrainment flow rate due to the vertical plunging liquid jet. Three types of fluids with different physical properties were utilized as a working fluid for the experiment. Air entrainment flow rate was measured using soap meniscus method and various geometrical parameters including nozzle diameter (13–16 mm), fall height (105–210 mm), pool depth (30–180 mm), and angle of the bottom pool surface (0–75°) were changed to investigate the effects on air entrainment rate. Plunging tube was installed around the falling jet and impinging point. For the current experimental conditions, it was found that the air entrainment rate depends on the product of Weber number and Laplace length scale, and new predictive model on air entrainment ratio, defined as the entrained air flow rate divided by impinging jet flow rate, is proposed. The proposed model is capable of predicting air entrainment ratio at a mean absolute relative deviation of 15.9% at the given experimental conditions.

KW - Air entrainment

KW - Liquid jet

KW - Plunging jet

KW - Two-phase flow

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U2 - 10.1016/j.ces.2018.01.037

DO - 10.1016/j.ces.2018.01.037

M3 - RGC 21 - Publication in refereed journal

SN - 0009-2509

VL - 181

SP - 251

EP - 263

JO - Chemical Engineering Science

JF - Chemical Engineering Science

ER -

Experimental investigation of air entrainment by vertical plunging liquid jet

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Corrigendum to ‘‘Experimental investigation of air entrainment byvertical plunging liquid jet” [Chem. Eng. Sci. 181 (2018) 251–263]

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