AI AA-87-0306 The Role of Recirculation in Improving Internal Mixing and Stability of Flames

AI AA-87-0298 Structure and Radiation Properties of Luminous Turbulent Acetylene/Air Diffusion Flames

A Numerical Study on Mixing of Transverse Injection in Supersonic Combustor

A numerical study on mixing of hydrogen injected transversely into a supersonic air stream has been performed by solving Two-Dimensional full Navier-Stokes equations. An explicit Harten-Yee Non-MUSCL Modified-flux-type TVD scheme has been used to solve the system of equations, and a zero-equation algebraic turbulence model to calculate the eddy viscosity coefficient. The main objectives of this...

Effect of Heat Recirculation in Biomass Flame Stability within a Cylindrical Micro-Combustor (TECHNICAL NOTE)

Flame stability inside a cylindrical micro-combustor was studied. Considering occurrence of heat recirculation, the respective relations were written and with parameters such as motion speed of reactants, flame propagation speed and thermal conductivity of the combustor’s wall, flame stability and its location inside micro-combustor were studied. It was found that for each thermal conductivity ...

Calculations of bluff-body stabilized flames using a joint probability density function model with detailed chemistry

Joint probability density function (PDF) calculations are reported of the bluff-body stabilized flames (HM1, HM2, and HM3) and the results are compared with the available experimental data. The calculations are based on the modeled transport equation for the joint PDF of velocity, turbulence frequency, and composition (species mass fractions and enthalpy) using the interaction by exchange with ...

A New Mathematical Model for the Prediction of Internal Recirculation in Impinging Streams Reactors

A mathematical model for the prediction of internal recirculation of complex impinging stream reactors has been presented. The model constitutes a repetition of a series of ideal plug flow reactors and CSTR reactors with recirculation. The simplicity of the repeating motif allows for the derivation of an algebraic relation of the whole system using the Laplace transform. An impinging stream...