Turbulent premixed flames in a closed vessel studied through analysis of flame photographs

Yoshisuke Hamamoto; Masaaki Izumi; Eiji Tomita

Turbulent premixed flames in a closed vessel studied through analysis of flame photographs

Yoshisuke Hamamoto, Masaaki Izumi, Eiji Tomita

Research output: Contribution to journal › Article

Abstract

The characteristics of roughness of a turbulent flame front in a disc-type combustion chamber were determined through high-speed schlieren photography and image analysis. The correlations between the characteristics of flame-front roughness and the turbulence characteristics or the turbulent burning velocity were discussed. The main results were as follows: (1) The RMS value 'ᾱ ' and the integral scale 'L̄ _f' of the flame-front roughness are strongly influenced by the intensity and the integral spatial scale of turbulence. (2.) The shape of the power spectrum of flame-front roughness is similar to that of the power spectrum of turbulent flow, and the microscale of the flame-front roughness is nearly equal to the Taylor microscale of turbulence. (3) The ratio of turbulent burning velocity to laminar burning velocity, S_T/S_L, is proportional to the value of √1+(2ᾱ /L̄_f )².

Original language	English
Pages (from-to)	443-448
Number of pages	6
Journal	JSME International Journal, Series 2: Fluids Engineering, Heat Transfer, Power, Combustion, Thermophysical Properties
Volume	32
Issue number	3
Publication status	Published - Aug 1989

Fingerprint

ASJC Scopus subject areas

Engineering(all)

Cite this

Hamamoto, Y., Izumi, M., & Tomita, E. (1989). Turbulent premixed flames in a closed vessel studied through analysis of flame photographs. JSME International Journal, Series 2: Fluids Engineering, Heat Transfer, Power, Combustion, Thermophysical Properties, 32(3), 443-448.

@article{77eb1b3aeb9640f9b9d5204a665f649e,

title = "Turbulent premixed flames in a closed vessel studied through analysis of flame photographs",

abstract = "The characteristics of roughness of a turbulent flame front in a disc-type combustion chamber were determined through high-speed schlieren photography and image analysis. The correlations between the characteristics of flame-front roughness and the turbulence characteristics or the turbulent burning velocity were discussed. The main results were as follows: (1) The RMS value 'ᾱ ' and the integral scale '{\=L} f' of the flame-front roughness are strongly influenced by the intensity and the integral spatial scale of turbulence. (2.) The shape of the power spectrum of flame-front roughness is similar to that of the power spectrum of turbulent flow, and the microscale of the flame-front roughness is nearly equal to the Taylor microscale of turbulence. (3) The ratio of turbulent burning velocity to laminar burning velocity, ST/SL, is proportional to the value of √1+(2ᾱ /{\=L}f )2.",

author = "Yoshisuke Hamamoto and Masaaki Izumi and Eiji Tomita",

year = "1989",

month = aug

language = "English",

volume = "32",

pages = "443--448",

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

issn = "1340-8054",

publisher = "Japan Society of Mechanical Engineers",

number = "3",

}

TY - JOUR

T1 - Turbulent premixed flames in a closed vessel studied through analysis of flame photographs

AU - Hamamoto, Yoshisuke

AU - Izumi, Masaaki

AU - Tomita, Eiji

PY - 1989/8

Y1 - 1989/8

N2 - The characteristics of roughness of a turbulent flame front in a disc-type combustion chamber were determined through high-speed schlieren photography and image analysis. The correlations between the characteristics of flame-front roughness and the turbulence characteristics or the turbulent burning velocity were discussed. The main results were as follows: (1) The RMS value 'ᾱ ' and the integral scale 'L̄ f' of the flame-front roughness are strongly influenced by the intensity and the integral spatial scale of turbulence. (2.) The shape of the power spectrum of flame-front roughness is similar to that of the power spectrum of turbulent flow, and the microscale of the flame-front roughness is nearly equal to the Taylor microscale of turbulence. (3) The ratio of turbulent burning velocity to laminar burning velocity, ST/SL, is proportional to the value of √1+(2ᾱ /L̄f )2.

AB - The characteristics of roughness of a turbulent flame front in a disc-type combustion chamber were determined through high-speed schlieren photography and image analysis. The correlations between the characteristics of flame-front roughness and the turbulence characteristics or the turbulent burning velocity were discussed. The main results were as follows: (1) The RMS value 'ᾱ ' and the integral scale 'L̄ f' of the flame-front roughness are strongly influenced by the intensity and the integral spatial scale of turbulence. (2.) The shape of the power spectrum of flame-front roughness is similar to that of the power spectrum of turbulent flow, and the microscale of the flame-front roughness is nearly equal to the Taylor microscale of turbulence. (3) The ratio of turbulent burning velocity to laminar burning velocity, ST/SL, is proportional to the value of √1+(2ᾱ /L̄f )2.

UR - http://www.scopus.com/inward/record.url?scp=0024717708&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0024717708&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0024717708

VL - 32

SP - 443

EP - 448

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

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

SN - 1340-8054

IS - 3

ER -

Turbulent premixed flames in a closed vessel studied through analysis of flame photographs

Abstract

Fingerprint

ASJC Scopus subject areas

Cite this

Access to Document