The hydrogen in the reformed fuel increases flame speed
and improves combustion stability, allowing higher EGR levels with attendant benefits for engine efficiency.
In addition, it provides outstanding scrub resistance, superior washability and 'class 1 flame speed
resistance' in case of fire.
Explosions have a very high flame speed
and are similar to TNT in effect.
According to the ignition delay time and flame speed
in Figure 3, the UC San Diego mechanism, LLNL N-Butane mechanism, and H.
It is a good practice to include a component from the major hydrocarbon group in fuel blend surrogates for emulating ignition delay, laminar flame speed
, and fuel speciation.
Both flame speed
and flame thickness change during the combustion event in a constant volume chamber.
Syngas containing more hydrogen would cause higher cylinder pressure and cylinder temperature due to the high flame speed
and high calorific value of hydrogen.
The library automatically accounts for the interdependencies between fuel components that might affect the laminar flame speed
. This automation replaces the alternative: using power-law correlations that assume independent factors (namely, pressure, equivalence ratio, temperature, dilution and fuel structure).
Figure 4 shows the turbulent flame speed
contour plots for the three analyses.
The start of control is passed to the turbine from "speed zero" to safe operating speed by supplying the right amount of fuel to establish the flame speed
in a way that minimizes the fatigue cycle down.
Engine speed also contributes to cycle to cycle variation in combustion, where increasing the engine speed resulted in an increase in flame speeds
and cyclic flame speed