TY - JOUR

T1 - Properties of turbulent hydrogen-air flames at elevated pressures

AU - Kitagawa, Toshiaki

AU - Nakahara, Takashi

N1 - Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.

PY - 2009/3

Y1 - 2009/3

N2 - Outwardly propagating hydrogen-air turbulent flames were studied at the equivalence ratios from 0.6 to 1.0 and the initial pressures from 0.10 to 0.50 MPa. Turbulence intensity, u′ was set to 0.80 to 1.59 m/s. The Markstein number decreased for increasing pressures and for small equivalence ratios. The ratios of turbulent to unstretched laminar burning velocities at a constant Peclet number increased with increasing turbulence Karlovitz number and decreasing Markstein number at a constant pressure. This burning velocity ratio increased with increasing pressure at the equivalence ratios of 0.6 and 0.8. At the equivalence ratio of 1.0, however, the burning velocity ratio did not increase with increasing pressure although the Markstein number reduced with pressure.

AB - Outwardly propagating hydrogen-air turbulent flames were studied at the equivalence ratios from 0.6 to 1.0 and the initial pressures from 0.10 to 0.50 MPa. Turbulence intensity, u′ was set to 0.80 to 1.59 m/s. The Markstein number decreased for increasing pressures and for small equivalence ratios. The ratios of turbulent to unstretched laminar burning velocities at a constant Peclet number increased with increasing turbulence Karlovitz number and decreasing Markstein number at a constant pressure. This burning velocity ratio increased with increasing pressure at the equivalence ratios of 0.6 and 0.8. At the equivalence ratio of 1.0, however, the burning velocity ratio did not increase with increasing pressure although the Markstein number reduced with pressure.

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U2 - 10.1299/kikaib.75.751_502

DO - 10.1299/kikaib.75.751_502

M3 - Article

AN - SCOPUS:67649945931

VL - 75

SP - 502

EP - 503

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 - 751

ER -