Results of such simulations are generalised diagrammatically, by plotting boundary values of ξ, the ratio of acoustic to auto-ignition velocity, against ɛ.
The ξ parameter is the acoustic speed normalized by the auto-ignition velocity, while ɛ is the acoustic wave residence time in a hot spot, normalized by the excitation, or heat release, time.
The extreme value of effective plastic work was found to be useful to determine the ignition threshold velocity for PBXs.
The straightness of the thermocouples is an important parameter for calculating both the ignition front velocity and the maximum temperature.
The ignition front velocity, the air mass flow rate and the maximum temperature reached are the most influential variables in the operating conditions [7,8].
The knowledge of rate constants for these processes derived empirically makes possible a quantitative description of all combustion characteristics, such as explosion limits, delay of ignition, and burning velocity.
We correlate the observed changes in microstructure with reaction properties that are characterized using differential scanning calorimetry (DSC), hot-plate ignition studies, and velocity measurements.
The optimization targets included predictions for the laminar burning velocity, ignition delay time, and pyrolysis of H2S, and H2S oxidation in a flow reactor.
To investigate the influence of the potential interaction between MTHF and isooctane, a detailed model was established by merging the models of the two fuels and validated against laminar burning velocity, ignition delay times and flame structure.
The principal burning characteristics of a laminar flame comprise the fuel vapour pressure, the laminar burning velocity, ignition delay times, Markstein numbers for strain rate and curvature, the stretch rates for the onset of flame instabilities and of flame extinction for different mixtures.
To minimize the computational effort involved in constructing sensitivity coefficients, and with the objective of accurately predicting global features or target functions such as ignition delay, burning velocity and extinction strain rates, optimal temporal and spatial locations to perform the local sensitivity are identified.
