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- James C. Keck
- 2011

A "variational" theory, which gives a least upper bound to the rate of a chemical reaction, is presented. The reaction is represented by the motion of a point in phase space across a trial surface dividing the "initial" and" final" chemical states. The trial surface is well defined in regions of phase space where interactions causing reaction are… (More)

- Gian Paolo Beretta, James C. Keck, Mohammad Janbozorgi, Hameed Metghalchi
- Entropy
- 2012

The Rate-Controlled Constrained-Equilibrium (RCCE) method for the description of the time-dependent behavior of dynamical systems in non-equilibrium states is a general, effective, physically based method for model order reduction that was originally developed in the framework of thermodynamics and chemical kinetics. A generalized mathematical formulation… (More)

- James C. Keck
- 2013

The modified phase-space theory of reaction rates is applied to the dissociation of HC£ in a heat bath of argon atoms. Excellent agreement is obtained between the theoretical predictions and the shock-tube measurements of the dissociation rate coefficient over the temperature range 2500-5000 K. The recrossing correction factor and nonequilibrium correction… (More)

- James Fay, James C. Keck
- Science
- 1968

According to the underlying concept of the rate-controlled constrained-equilibrium (RCCE) method, the relaxation of a complex reacting system towards the final equilibrium state is governed by a set of active and passive constraints imposed by the internal dynamics of the system that is considerably smaller in dimension than the original system. A set of 10… (More)

According to the underlying concept of the rate-controlled constrained-equilibrium (RCCE) method, the relaxation of a complex reacting system towards the final equilibrium state is governed by a set of active and passive constraints imposed by the internal dynamics of the system, which is considerably smaller in dimension than the original sys tem. A set of… (More)

- John B. Heywood, James C. Keck
- Environmental science & technology
- 1973

The basic mechanisms responsible for the production of nitrogen oxide and hydrocarbon emissions from automotive spark-ignition engines are reviewed. It is shown how the formation of nitric oxide is rate controlled in the high-temperature burned gases inside the engine cylinder. A mathematical model which predicts nitric oxide emissions for given engine… (More)

This report summarizes the key results and conceptual findings from a three year research program on hydrocarbon formation and oxidation mechanisms in spark-ignition engines. Research was carried out in four areas: laminar flame quenching experimental and analytical studies; quench layer studies in a spark-ignition engine using a rapid-acting gas sampling… (More)

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