The results demonstrate explicitly the stabilizing effect of gravity on long-wave disturbances, the stabilizing effect of viscosity (both liquid and gas) and surface tension on short-wave perturbations, and the instability associated with intermediate wavenumbers for critical negative values of Ap.
In general, both gas phase and surface reactions are treated by rate equations, but if the average population of a certain surface species becomes smaller than one per grain, the algorithm switches to moment equations.
In-situ DRIFTS-MS analysis revealed significant differences in both gas phase and surface species.
A simple kinetic model was applied to analyze the evolution of both gas phase and surface species.
Three types of irreversible alkylations involving both gas phase and surface coke precursors, viz., alkylation of phenyl substituted carbenium ions with C3 C5 alkenes, alkylation of the nucleus of monoaromatics with C3 C5 alkylcarbenium ions, and alkylation of C8 C10 alkylcarbenium ions with C3 C5 alkenes, have been considered as rate-determining steps in coke formation.
In black-oil formulations, only two pseudo-components are allowed in hydrocarbon phases namely, surface gas and surface oil.
It was heated by a heat exchanger with hot gas and surface recombination.
In these formulations, only two pseudo-components are 'allowed' to be present in the reservoir phases i.e., surface gas and surface oil.
The combustion process utilizes detailed gas and surface reaction models.
Direct numerical simulations are conducted on a single aluminum burning particle accounting for both detailed gas-phase and surface kinetic mechanism.
