LDV MEASUREMENTS OF SWIRL FLOW IN AN UNI-FLOW TYPED ENGINE.

H. Kido, Hiroshi Tajima, A. Matsumoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Characteristics of in-cylinder gas flow of a two cycle uni-flow typed engine were measured by Laser Doppler Velocimetry (LDV). Three velocity components were measured at the upper part of the combustion chamber and tangential velocity was measured at several sections along the cylinder axis under the motoring condition. The radial distribution of swirl velocity changes its profile from a near solid-body-rotation pattern in the early compression stroke into a flat-top trapezoidal pattern along the course of compression and expansion stroke. Axial interchange of angular momentum exists in the early compression stroke which is strongly related to the uneven distribution of angular momentum along the cylinder axis and the oscillation of each velocity component, whose period is a little smaller than that of in-cylinder swirl rotation. A secondary air flow in the upper part of the combustion chamber is inferred from the measured radial and axial velocities in the early compression stroke.

Original languageEnglish
Title of host publicationUnknown Host Publication Title
PublisherASME
Pages247-254
Number of pages8
Volume5
Publication statusPublished - 1987

Fingerprint

Velocity measurement
Engine cylinders
Engines
Lasers
Angular momentum
Combustion chambers
Interchanges
Flow of gases
Compaction
Air

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Kido, H., Tajima, H., & Matsumoto, A. (1987). LDV MEASUREMENTS OF SWIRL FLOW IN AN UNI-FLOW TYPED ENGINE. In Unknown Host Publication Title (Vol. 5, pp. 247-254). ASME.

LDV MEASUREMENTS OF SWIRL FLOW IN AN UNI-FLOW TYPED ENGINE. / Kido, H.; Tajima, Hiroshi; Matsumoto, A.

Unknown Host Publication Title. Vol. 5 ASME, 1987. p. 247-254.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kido, H, Tajima, H & Matsumoto, A 1987, LDV MEASUREMENTS OF SWIRL FLOW IN AN UNI-FLOW TYPED ENGINE. in Unknown Host Publication Title. vol. 5, ASME, pp. 247-254.
Kido H, Tajima H, Matsumoto A. LDV MEASUREMENTS OF SWIRL FLOW IN AN UNI-FLOW TYPED ENGINE. In Unknown Host Publication Title. Vol. 5. ASME. 1987. p. 247-254
Kido, H. ; Tajima, Hiroshi ; Matsumoto, A. / LDV MEASUREMENTS OF SWIRL FLOW IN AN UNI-FLOW TYPED ENGINE. Unknown Host Publication Title. Vol. 5 ASME, 1987. pp. 247-254
@inproceedings{0c4f898915b84423998919d2a35ae607,
title = "LDV MEASUREMENTS OF SWIRL FLOW IN AN UNI-FLOW TYPED ENGINE.",
abstract = "Characteristics of in-cylinder gas flow of a two cycle uni-flow typed engine were measured by Laser Doppler Velocimetry (LDV). Three velocity components were measured at the upper part of the combustion chamber and tangential velocity was measured at several sections along the cylinder axis under the motoring condition. The radial distribution of swirl velocity changes its profile from a near solid-body-rotation pattern in the early compression stroke into a flat-top trapezoidal pattern along the course of compression and expansion stroke. Axial interchange of angular momentum exists in the early compression stroke which is strongly related to the uneven distribution of angular momentum along the cylinder axis and the oscillation of each velocity component, whose period is a little smaller than that of in-cylinder swirl rotation. A secondary air flow in the upper part of the combustion chamber is inferred from the measured radial and axial velocities in the early compression stroke.",
author = "H. Kido and Hiroshi Tajima and A. Matsumoto",
year = "1987",
language = "English",
volume = "5",
pages = "247--254",
booktitle = "Unknown Host Publication Title",
publisher = "ASME",

}

TY - GEN

T1 - LDV MEASUREMENTS OF SWIRL FLOW IN AN UNI-FLOW TYPED ENGINE.

AU - Kido, H.

AU - Tajima, Hiroshi

AU - Matsumoto, A.

PY - 1987

Y1 - 1987

N2 - Characteristics of in-cylinder gas flow of a two cycle uni-flow typed engine were measured by Laser Doppler Velocimetry (LDV). Three velocity components were measured at the upper part of the combustion chamber and tangential velocity was measured at several sections along the cylinder axis under the motoring condition. The radial distribution of swirl velocity changes its profile from a near solid-body-rotation pattern in the early compression stroke into a flat-top trapezoidal pattern along the course of compression and expansion stroke. Axial interchange of angular momentum exists in the early compression stroke which is strongly related to the uneven distribution of angular momentum along the cylinder axis and the oscillation of each velocity component, whose period is a little smaller than that of in-cylinder swirl rotation. A secondary air flow in the upper part of the combustion chamber is inferred from the measured radial and axial velocities in the early compression stroke.

AB - Characteristics of in-cylinder gas flow of a two cycle uni-flow typed engine were measured by Laser Doppler Velocimetry (LDV). Three velocity components were measured at the upper part of the combustion chamber and tangential velocity was measured at several sections along the cylinder axis under the motoring condition. The radial distribution of swirl velocity changes its profile from a near solid-body-rotation pattern in the early compression stroke into a flat-top trapezoidal pattern along the course of compression and expansion stroke. Axial interchange of angular momentum exists in the early compression stroke which is strongly related to the uneven distribution of angular momentum along the cylinder axis and the oscillation of each velocity component, whose period is a little smaller than that of in-cylinder swirl rotation. A secondary air flow in the upper part of the combustion chamber is inferred from the measured radial and axial velocities in the early compression stroke.

UR - http://www.scopus.com/inward/record.url?scp=0023214082&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0023214082&partnerID=8YFLogxK

M3 - Conference contribution

VL - 5

SP - 247

EP - 254

BT - Unknown Host Publication Title

PB - ASME

ER -