Recent advances in understanding of flammability characteristics of hydrogen

AL Sánchez, FA Williams - Progress in Energy and Combustion Science, 2014 - Elsevier
The current increasing interest in hydrogen utilization and increasing understanding of
hydrogen combustion motivate this review of flammability characteristics of hydrogen. The …

Structure and acoustic-pressure response of hydrogen–oxygen diffusion flames at high pressure

CH Sohn, SH Chung, SR Lee, JS Kim - Combustion and flame, 1998 - Elsevier
The flame structures and extinction characteristics of undiluted hydrogen–oxygen strained
diffusion flames at high pressures with detailed and reduced chemistry are numerically …

Effect of pressure on the extinction, acoustic pressure response, and NO formation in diluted hydrogen–air diffusion flames

CH Sohn, SH Chung - Combustion and Flame, 2000 - Elsevier
Characteristics of extinction, acoustic response, and NO formation for diluted hydrogen–air
diffusion flames at various pressures are investigated numerically by adopting a counterflow …

Combustion of single droplets and droplet pairs in a vibrating field under microgravity

K Okai, O Moriue, M Araki, M Tsue, M Kono… - Proceedings of the …, 2000 - Elsevier
This paper presents results of an experimental investigation on acoustic effects on
combustion of single droplets and droplet pairs in microgravity. The ambient gas was air at …

Unsteady analysis of acoustic pressure response in N2 diluted H2 and air diffusion flames

CH Sohn - Combustion and flame, 2002 - Elsevier
Acoustic pressure response of diluted hydrogen-air diffusion flames is investigated
numerically by adopting a fully unsteady analysis of flame structures in a counterflow …

Effects of various baffle designs on acoustic characteristics in combustion chamber of liquid rocket engine

CH Sohn, SK Kim, YM Kim - KSME international journal, 2004 - Springer
Abstract Effects of various baffle designs on acoustic characteristics in combustion chamber
are numerically investigated by adopting linear acoustic analysis. A hub-blade configuration …

Combustion stability boundaries of the subscale rocket chamber with impinging jet injectors

CH Sohn, WS Seol, AA Shibanov… - Journal of Propulsion and …, 2007 - arc.aiaa.org
HIGH-frequency combustion instability is the phenomenon of amplification of pressure
oscillations through in-phase heat addition/extraction from combustion. It is often called …

Stability rating tests for the length-optimization of baffles in a liquid propellant combustion chamber using a pulse gun

HJ Kim, S Seo, KJ Lee, YM Han, SY Lee… - Aerospace science and …, 2008 - Elsevier
Stability rating tests using a pulse gun, one type of artificial disturbance device, have been
performed to optimize and to limit the axial baffle length of a combustor. To determine …

Numerical analysis of acoustic characteristics in gas turbine combustor with spatial non-homogeneity

CH Sohn, HC Cho - KSME international journal, 2004 - Springer
Acoustic characteristics in an industrial gas-turbine combustor are numerically investigated
by a linear acoustic analysis. Spatially non-homogeneous temperature field in the …

Coaxial jet flame subject to long-wavelength acoustic oscillations

WA Sirignano, J Krieg - Journal of Propulsion and Power, 2016 - arc.aiaa.org
A linear model is developed to relate the response of energy release rate per unit volume to
velocity and pressure oscillations in a liquid-propellant rocket engine. Coaxial injection of …