Experimental investigation of geometric scaling on atomization in a two-phase gas/liquid spray

C. E. Ejim, Azizur Rahaman, A. Amirfazli, B. A. Fleck

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In this study the atomization performance of a full-scale industrial air-liquid nozzle is compared to a one-quarter model. The objective is to establish a global Sauter mean diameter D32(gb) correlation as a function of nozzle size (D) in a two-phase gas/liquid (TPGL) spray atomization. This information is to be used in the design and development of nozzles for heavy oil upgrading industry. Compressed air was used as the gas phase; the liquids were water, canola oil, and glycerine solutions all at room temperature. The liquid flow rates were varied from 0.095 to 0.195 L/s, and the gas-to-liquid-ratio (β), by mass, was fixed at 1%, similar to commercial fluid coker nozzles. Fluid mixing pressures in the test were between 516 and 1000 kPa. The D32within the spray was measured using a Dantec 2-D phase-Doppler particle anemometer (PDPA) with measurements performed at axial distances of 100, 202, and 405 mm from the nozzle exit and within spray widths of +50 to -50 mm in the horizontal plane. Experimental results show that if the D is increased from 3.1 to 4.1 mm (1.3 times), D does not show a change on D32 and equates to the power of 0.1 (glycerine solution sprays at μL = 67 mPa s) to 0.9 (water sprays at μL = 1 mPa s). Finally, the D 32(gb)correlation as a function of geometric scaling estimated drop size within a 17% maximum deviation between the experimental and curve fit data.

Original languageEnglish
Pages (from-to)133-155
Number of pages23
JournalMultiphase Science and Technology
Volume22
Issue number2
DOIs
Publication statusPublished - 2010
Externally publishedYes

Fingerprint

Atomization
atomizing
Spray
Nozzle
Experimental Investigation
nozzles
sprayers
Nozzles
Scaling
Liquid
vapor phases
scaling
Liquids
liquids
Gases
Glycerol
oils
compressed air
Equate
Water

Keywords

  • Fluid coker nozzle
  • Gas-to-liquid ratio
  • Phase-Doppler particle anemometer
  • Sauter mean diameter
  • Scaling
  • Two-phase gas/liquid spray

ASJC Scopus subject areas

  • Modelling and Simulation
  • Condensed Matter Physics
  • Engineering(all)

Cite this

Experimental investigation of geometric scaling on atomization in a two-phase gas/liquid spray. / Ejim, C. E.; Rahaman, Azizur; Amirfazli, A.; Fleck, B. A.

In: Multiphase Science and Technology, Vol. 22, No. 2, 2010, p. 133-155.

Research output: Contribution to journalArticle

@article{9b897ddcad5145d7b94bd52e5e405d57,
title = "Experimental investigation of geometric scaling on atomization in a two-phase gas/liquid spray",
abstract = "In this study the atomization performance of a full-scale industrial air-liquid nozzle is compared to a one-quarter model. The objective is to establish a global Sauter mean diameter D32(gb) correlation as a function of nozzle size (D) in a two-phase gas/liquid (TPGL) spray atomization. This information is to be used in the design and development of nozzles for heavy oil upgrading industry. Compressed air was used as the gas phase; the liquids were water, canola oil, and glycerine solutions all at room temperature. The liquid flow rates were varied from 0.095 to 0.195 L/s, and the gas-to-liquid-ratio (β), by mass, was fixed at 1{\%}, similar to commercial fluid coker nozzles. Fluid mixing pressures in the test were between 516 and 1000 kPa. The D32within the spray was measured using a Dantec 2-D phase-Doppler particle anemometer (PDPA) with measurements performed at axial distances of 100, 202, and 405 mm from the nozzle exit and within spray widths of +50 to -50 mm in the horizontal plane. Experimental results show that if the D is increased from 3.1 to 4.1 mm (1.3 times), D does not show a change on D32 and equates to the power of 0.1 (glycerine solution sprays at μL = 67 mPa s) to 0.9 (water sprays at μL = 1 mPa s). Finally, the D 32(gb)correlation as a function of geometric scaling estimated drop size within a 17{\%} maximum deviation between the experimental and curve fit data.",
keywords = "Fluid coker nozzle, Gas-to-liquid ratio, Phase-Doppler particle anemometer, Sauter mean diameter, Scaling, Two-phase gas/liquid spray",
author = "Ejim, {C. E.} and Azizur Rahaman and A. Amirfazli and Fleck, {B. A.}",
year = "2010",
doi = "10.1615/MultScienTechn.v22.i2.30",
language = "English",
volume = "22",
pages = "133--155",
journal = "Multiphase Science and Technology",
issn = "0276-1459",
publisher = "Begell House Inc.",
number = "2",

}

TY - JOUR

T1 - Experimental investigation of geometric scaling on atomization in a two-phase gas/liquid spray

AU - Ejim, C. E.

AU - Rahaman, Azizur

AU - Amirfazli, A.

AU - Fleck, B. A.

PY - 2010

Y1 - 2010

N2 - In this study the atomization performance of a full-scale industrial air-liquid nozzle is compared to a one-quarter model. The objective is to establish a global Sauter mean diameter D32(gb) correlation as a function of nozzle size (D) in a two-phase gas/liquid (TPGL) spray atomization. This information is to be used in the design and development of nozzles for heavy oil upgrading industry. Compressed air was used as the gas phase; the liquids were water, canola oil, and glycerine solutions all at room temperature. The liquid flow rates were varied from 0.095 to 0.195 L/s, and the gas-to-liquid-ratio (β), by mass, was fixed at 1%, similar to commercial fluid coker nozzles. Fluid mixing pressures in the test were between 516 and 1000 kPa. The D32within the spray was measured using a Dantec 2-D phase-Doppler particle anemometer (PDPA) with measurements performed at axial distances of 100, 202, and 405 mm from the nozzle exit and within spray widths of +50 to -50 mm in the horizontal plane. Experimental results show that if the D is increased from 3.1 to 4.1 mm (1.3 times), D does not show a change on D32 and equates to the power of 0.1 (glycerine solution sprays at μL = 67 mPa s) to 0.9 (water sprays at μL = 1 mPa s). Finally, the D 32(gb)correlation as a function of geometric scaling estimated drop size within a 17% maximum deviation between the experimental and curve fit data.

AB - In this study the atomization performance of a full-scale industrial air-liquid nozzle is compared to a one-quarter model. The objective is to establish a global Sauter mean diameter D32(gb) correlation as a function of nozzle size (D) in a two-phase gas/liquid (TPGL) spray atomization. This information is to be used in the design and development of nozzles for heavy oil upgrading industry. Compressed air was used as the gas phase; the liquids were water, canola oil, and glycerine solutions all at room temperature. The liquid flow rates were varied from 0.095 to 0.195 L/s, and the gas-to-liquid-ratio (β), by mass, was fixed at 1%, similar to commercial fluid coker nozzles. Fluid mixing pressures in the test were between 516 and 1000 kPa. The D32within the spray was measured using a Dantec 2-D phase-Doppler particle anemometer (PDPA) with measurements performed at axial distances of 100, 202, and 405 mm from the nozzle exit and within spray widths of +50 to -50 mm in the horizontal plane. Experimental results show that if the D is increased from 3.1 to 4.1 mm (1.3 times), D does not show a change on D32 and equates to the power of 0.1 (glycerine solution sprays at μL = 67 mPa s) to 0.9 (water sprays at μL = 1 mPa s). Finally, the D 32(gb)correlation as a function of geometric scaling estimated drop size within a 17% maximum deviation between the experimental and curve fit data.

KW - Fluid coker nozzle

KW - Gas-to-liquid ratio

KW - Phase-Doppler particle anemometer

KW - Sauter mean diameter

KW - Scaling

KW - Two-phase gas/liquid spray

UR - http://www.scopus.com/inward/record.url?scp=77954717333&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77954717333&partnerID=8YFLogxK

U2 - 10.1615/MultScienTechn.v22.i2.30

DO - 10.1615/MultScienTechn.v22.i2.30

M3 - Article

AN - SCOPUS:77954717333

VL - 22

SP - 133

EP - 155

JO - Multiphase Science and Technology

JF - Multiphase Science and Technology

SN - 0276-1459

IS - 2

ER -