Turbulent premixed flames in closed combustion chambers

Yoshisuke Hamamoto; Eiji Tomita; Sadami Yoshiyama

doi:10.1299/jsmeb.39.171

Turbulent premixed flames in closed combustion chambers

Yoshisuke Hamamoto, Eiji Tomita, Sadami Yoshiyama

Graduate School of Natural Science and Technology

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

A thick burning zone including unburned and burned gas is observed in turbulent premixed flames. In this study, the burning rate and the ion current in the burning zone were investigated in propane-air turbulent flames in a spark-ignition engine cylinder and a constant-volume combustion chamber. The main results are as follows: (1) in propagating turbulent flame, the rate at which mass is burned is not equal to the rate of mass entrainment to the flame front; (2) the ratio of the combustion rate per unit area of turbulent flame front to that of laminar flame, Z=(M·_bT/A_T)l(M·_bL/A_L), is a reasonable expression of the effect of turbulence on the combustion of propagating flame; (3) the ion-current signal has multiple peaks in turbulent flame. The average number of ion current peaks increases with the enlargement of burning zone and the value of Z.

Original language	English
Pages (from-to)	171-175
Number of pages	5
Journal	JSME International Journal, Series B: Fluids and Thermal Engineering
Volume	39
Issue number	1
DOIs	https://doi.org/10.1299/jsmeb.39.171
Publication status	Published - Feb 1996

Keywords

Burning Velocity
Combustion
Combustion Measurement
Combustion Phenomena
Gasoline Engine
Internal Combustion Engine
Premixed Combustion
Spark-Ignition Engine
Turbulent Flame

ASJC Scopus subject areas

Mechanical Engineering
Physical and Theoretical Chemistry
Fluid Flow and Transfer Processes

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10.1299/jsmeb.39.171

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@article{17552b9934d947cc8fc7648002daa1bd,

title = "Turbulent premixed flames in closed combustion chambers",

abstract = "A thick burning zone including unburned and burned gas is observed in turbulent premixed flames. In this study, the burning rate and the ion current in the burning zone were investigated in propane-air turbulent flames in a spark-ignition engine cylinder and a constant-volume combustion chamber. The main results are as follows: (1) in propagating turbulent flame, the rate at which mass is burned is not equal to the rate of mass entrainment to the flame front; (2) the ratio of the combustion rate per unit area of turbulent flame front to that of laminar flame, Z=(M·bT/AT)l(M·bL/AL), is a reasonable expression of the effect of turbulence on the combustion of propagating flame; (3) the ion-current signal has multiple peaks in turbulent flame. The average number of ion current peaks increases with the enlargement of burning zone and the value of Z.",

keywords = "Burning Velocity, Combustion, Combustion Measurement, Combustion Phenomena, Gasoline Engine, Internal Combustion Engine, Premixed Combustion, Spark-Ignition Engine, Turbulent Flame",

author = "Yoshisuke Hamamoto and Eiji Tomita and Sadami Yoshiyama",

year = "1996",

month = feb,

doi = "10.1299/jsmeb.39.171",

language = "English",

volume = "39",

pages = "171--175",

journal = "JSME International Journal, Series B: Fluids and Thermal Engineering",

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number = "1",

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T1 - Turbulent premixed flames in closed combustion chambers

AU - Hamamoto, Yoshisuke

AU - Tomita, Eiji

AU - Yoshiyama, Sadami

PY - 1996/2

Y1 - 1996/2

N2 - A thick burning zone including unburned and burned gas is observed in turbulent premixed flames. In this study, the burning rate and the ion current in the burning zone were investigated in propane-air turbulent flames in a spark-ignition engine cylinder and a constant-volume combustion chamber. The main results are as follows: (1) in propagating turbulent flame, the rate at which mass is burned is not equal to the rate of mass entrainment to the flame front; (2) the ratio of the combustion rate per unit area of turbulent flame front to that of laminar flame, Z=(M·bT/AT)l(M·bL/AL), is a reasonable expression of the effect of turbulence on the combustion of propagating flame; (3) the ion-current signal has multiple peaks in turbulent flame. The average number of ion current peaks increases with the enlargement of burning zone and the value of Z.

AB - A thick burning zone including unburned and burned gas is observed in turbulent premixed flames. In this study, the burning rate and the ion current in the burning zone were investigated in propane-air turbulent flames in a spark-ignition engine cylinder and a constant-volume combustion chamber. The main results are as follows: (1) in propagating turbulent flame, the rate at which mass is burned is not equal to the rate of mass entrainment to the flame front; (2) the ratio of the combustion rate per unit area of turbulent flame front to that of laminar flame, Z=(M·bT/AT)l(M·bL/AL), is a reasonable expression of the effect of turbulence on the combustion of propagating flame; (3) the ion-current signal has multiple peaks in turbulent flame. The average number of ion current peaks increases with the enlargement of burning zone and the value of Z.

KW - Burning Velocity

KW - Combustion

KW - Combustion Measurement

KW - Combustion Phenomena

KW - Gasoline Engine

KW - Internal Combustion Engine

KW - Premixed Combustion

KW - Spark-Ignition Engine

KW - Turbulent Flame

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JF - JSME International Journal, Series B: Fluids and Thermal Engineering

IS - 1

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Turbulent premixed flames in closed combustion chambers

Abstract

Keywords

ASJC Scopus subject areas

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