In this article, the in situ adaptive tabulation (ISAT) procedure, originally developed [Pope, S. (1997). Computationally efficient implementation of combustion chemistry using in situ adaptive tabulation. Combustion Theory and Modeling, 1, 41–63] for the efficient computation of homogeneous reactions in chemically reacting flows, is adapted for the efficient computation of heterogeneous surfac...

This paper reports research in progress. Two types of domain decomposition have been used in distributed computing with networked workstations for the numerical modeling of full-scale utility boilers. The numerical model is a three-dimensional combustion code which couples turbulent computational fluid dynamics with the chemical reaction process and the radiative heat transfer. Two approaches, ...

A mathematical model was developed of the drying, volatilization, and combustion phenomena on the packed bed of solid wastes on a moving grate. Gasesolid flow and the heterogeneous chemical reactions were considered. Since experimental work in this area of study is very difficult and costly, the development of such a model is very important. The gas phase turbulence was modeled using keε turbul...

The reaction between vibrationally excited H2 and F2 had previously been suggested to be a critical chain-branching step in the combustion of mixtures containing H2 and F2. In the present study, the vibrational state specific dynamics and kinetics for the reaction H2 + F2 → H + HF + F were investigated by quasiclassical trajectory (QCT) and quantum mechanical (QM) reactive scattering calculatio...

Combustion reactions quench in small volumes due to fast heat escape via the volume boundary. Nevertheless, the reaction between hydrogen and oxygen was observed in nanoand micro-bubbles. The bubbles containing a mixture of gases were produced in microsystems using electrochemical decomposition of water with a fast switching of voltage polarity. In this paper, we review our experimental results...

A unique enzyme mechanism named a bio-scale engine was proposed for a nitric oxide reductase, cytochrome P450nor (P450nor). P450nor has some structural similarities with a combustion engine: the heme pocket, the heme and NADH correspond to a combustion chamber, a piston head, and a spark plug, respectively. Each putative step of this reaction occurred in the heme pocket was characterized using ...

Spark-assisted homogeneous charge compression ignition (HCCI) combustion may be a method to improve the operation of HCCI engines. In the current study, the impact of spark assist on the fundamental properties of ignition and combustion was investigated in a single cylinder, optically-accessible research engine. Early port fuel injection and air preheating were used with indolene fuel in the st...

A high-speed projectile in combustible gas can initiate and stabilize a detonation wave under suitable conditions [1]. In this paper, numerical simulations of projectile induced detonation waves are presented. Using a one-step irreversible reaction model, the transition from shock-induced combustion to stabilized oblique detonation is observed via numerical simulations. An analysis of this tran...

A characterization study was performed on the spent oil shale (oil shale ash) obtained from the combustion of Jordanian oil shale. This characterization utilized different analytical techniques. These include scanning electron microscope with energy dispersive spectrum analysis, X-ray fluorescence, X-ray diffraction and Qemscan. During the combustion process, minimal fragmentation was encounter...

The kinetic parameters of ethylene combustion in the presence of acetic acid, i.e., during the synthesis of vinyl acetate and in the absence of acetic acid, have been measured in the temperature range 413–453 K over Pd supported on a high surface area SiO2 (600 m 2/g) at pressures ranging from 5.0 to 15.0 kPa of C2H4 and 1.0 to 10.0 kPa of O2. CO2 formation as a function of the partial pressure...