From simulation, the maximum pressure rise rate and deflagration index of methane, hydrogen and their mixtures are obtained.
The measured parameters include maximum deflagration pressure rise, maximum rate of pressure rise, minimum ignition temperature, minimum ignition energy and minimum explosible concentration.
Finally, based on theoretical analysis we propose a correlation to calculate the maximum pressure rise rate and deflagration index of methane at a broad range of initial pressure.
The influence of equivalence ratio, initial temperature and initial pressure on the maximum pressure rise rate and deflagration index is examined.
The measured characterization parameters include: maximum deflagration pressure rise (ΔPMAX), maximum rate of pressure rise (dP/dt MAX, minimum ignition temperature (TC), minimum explosible concentration (MEC), and minimum ignition energy (MIE).
The determined parameters of hydrided and partially-dehydrided states of this system include: maximum deflagration pressure rise (PMAX), maximum rate of pressure rise (dP/dt MAX, minimum ignition temperature (TC), minimum explosible concentration (MEC), minimum ignition energy (MIE), and explosion severity index (KSt).
Experimental investigations are conducted in order to gain more understanding of the underlying processes and confirm the reliability of the geometry with respect to the success rate of the deflagration-to-detonation transition (DDT).
The core insights of this investigation show that the maximum deflagration pressure rise (ΔPMAX) and maximum rate of pressure rise ((dP/dt MAX) of this hybrid mixture are greater than those corresponding to deflagrations of H2/air mixtures for all the dust and H2 concentrations being examined.
The deflagration strength is significantly determined by flow rate and ignition distance.
The explosion parameters such as explosion pressure, explosion time, maximum rate of pressure rise, and deflagration index are obtained from the experiment.
