Ambient gas entrainment into a transient gas jet (visualization of surrounding air motion and an estimation of entrainment amount by path line method)

Eiji Tomita, Yoshisuke Hamamoto, Hiroyuki Tsutsumi, Shiro Takasaki

Research output: Contribution to journalArticle

Abstract

For the study of the combustion in a transient gas jet used in gas diesel engines, it is very important to investigate the entrainment process of the surroundings of the jet. In this study, a path line method utilizing a CCD camera with various shutter times was applied. Large (40μm), light weight micro-balloon particles are used for scattering the path lines of the surroundings and fine particles (0. 75 μm) are used for visualizing the approximate shape of the jet. The transient gas velocity was also measured with a two-component laser Doppler velocimeter. Consequently, (1) the jet shape and entrainment process could be visualized simultaneously, and (2) this path line method was found to be very useful for estimating the amount of entrainment air because of the good agreement with the value obtained using LDV data.

Original languageEnglish
Pages (from-to)2469-2476
Number of pages8
JournalNippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume59
Issue number564
Publication statusPublished - Aug 1993
Externally publishedYes

Fingerprint

Air entrainment
gas jets
entrainment
Visualization
air
Air
Gases
gases
laser doppler velocimeters
diesel engines
Camera shutters
shutters
balloons
CCD cameras
Laser Doppler velocimeters
Gas engines
Balloons
estimating
Diesel engines
Scattering

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

@article{51c900627b984585a1aaacc533e7f9b7,
title = "Ambient gas entrainment into a transient gas jet (visualization of surrounding air motion and an estimation of entrainment amount by path line method)",
abstract = "For the study of the combustion in a transient gas jet used in gas diesel engines, it is very important to investigate the entrainment process of the surroundings of the jet. In this study, a path line method utilizing a CCD camera with various shutter times was applied. Large (40μm), light weight micro-balloon particles are used for scattering the path lines of the surroundings and fine particles (0. 75 μm) are used for visualizing the approximate shape of the jet. The transient gas velocity was also measured with a two-component laser Doppler velocimeter. Consequently, (1) the jet shape and entrainment process could be visualized simultaneously, and (2) this path line method was found to be very useful for estimating the amount of entrainment air because of the good agreement with the value obtained using LDV data.",
author = "Eiji Tomita and Yoshisuke Hamamoto and Hiroyuki Tsutsumi and Shiro Takasaki",
year = "1993",
month = "8",
language = "English",
volume = "59",
pages = "2469--2476",
journal = "Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B",
issn = "0387-5016",
publisher = "Japan Society of Mechanical Engineers",
number = "564",

}

TY - JOUR

T1 - Ambient gas entrainment into a transient gas jet (visualization of surrounding air motion and an estimation of entrainment amount by path line method)

AU - Tomita, Eiji

AU - Hamamoto, Yoshisuke

AU - Tsutsumi, Hiroyuki

AU - Takasaki, Shiro

PY - 1993/8

Y1 - 1993/8

N2 - For the study of the combustion in a transient gas jet used in gas diesel engines, it is very important to investigate the entrainment process of the surroundings of the jet. In this study, a path line method utilizing a CCD camera with various shutter times was applied. Large (40μm), light weight micro-balloon particles are used for scattering the path lines of the surroundings and fine particles (0. 75 μm) are used for visualizing the approximate shape of the jet. The transient gas velocity was also measured with a two-component laser Doppler velocimeter. Consequently, (1) the jet shape and entrainment process could be visualized simultaneously, and (2) this path line method was found to be very useful for estimating the amount of entrainment air because of the good agreement with the value obtained using LDV data.

AB - For the study of the combustion in a transient gas jet used in gas diesel engines, it is very important to investigate the entrainment process of the surroundings of the jet. In this study, a path line method utilizing a CCD camera with various shutter times was applied. Large (40μm), light weight micro-balloon particles are used for scattering the path lines of the surroundings and fine particles (0. 75 μm) are used for visualizing the approximate shape of the jet. The transient gas velocity was also measured with a two-component laser Doppler velocimeter. Consequently, (1) the jet shape and entrainment process could be visualized simultaneously, and (2) this path line method was found to be very useful for estimating the amount of entrainment air because of the good agreement with the value obtained using LDV data.

UR - http://www.scopus.com/inward/record.url?scp=0027649431&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0027649431&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0027649431

VL - 59

SP - 2469

EP - 2476

JO - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B

JF - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B

SN - 0387-5016

IS - 564

ER -