Experimental investigation of air entrainment by vertical plunging liquid jet

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

32 Scopus Citations
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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)251-263
Journal / PublicationChemical Engineering Science
Volume181
Publication statusPublished - 18 May 2018
Externally publishedYes

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.

Research Area(s)

  • Air entrainment, Liquid jet, Plunging jet, Two-phase flow

Bibliographic Note

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Citation Format(s)

Experimental investigation of air entrainment by vertical plunging liquid jet. / Miwa, Shuichiro; Moribe, Takahiro; Tsutstumi, Kohei et al.
In: Chemical Engineering Science, Vol. 181, 18.05.2018, p. 251-263.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review