Critical evaluation of Jet-A spray combustion using propane chemical kinetics in gas turbine combustion simulated by KIVA-2

Conference · Sun Jul 01 00:00:00 EDT 1990

OSTI ID:6517401

Nguyen, H L; Ying, S J

Jet-A spray combustion has been evaluated in gas turbine combustion with the use of propane chemical kinetics as the first approximation for the chemical reactions. Here, the numerical solutions are obtained by using the KIVA-2 computer code. The KIVA-2 code is the most developed of the available multidimensional combustion computer programs for application of the in-cylinder combustion dynamics of internal combustion engines. The released version of KIVA-2 assumes that 12 chemical species are present; the code uses an Arrhenius kinetic-controlled combustion model governed by a four-step global chemical reaction and six equilibrium reactions. Researchers efforts involve the addition of Jet-A thermophysical properties and the implementation of detailed reaction mechanisms for propane oxidation. Three different detailed reaction mechanism models are considered. The first model consists of 131 reactions and 45 species. This is considered as the full mechanism which is developed through the study of chemical kinetics of propane combustion in an enclosed chamber. The full mechanism is evaluated by comparing calculated ignition delay times with available shock tube data. However, these detailed reactions occupy too much computer memory and CPU time for the computation. Therefore, it only serves as a benchmark case by which to evaluate other simplified models. Two possible simplified models were tested in the existing computer code KIVA-2 for the same conditions as used with the full mechanism. One model is obtained through a sensitivity analysis using LSENS, the general kinetics and sensitivity analysis program code of D. A. Bittker and K. Radhakrishnan. This model consists of 45 chemical reactions and 27 species. The other model is based on the work published by C. K. Westbrook and F. L. Dryer.

• Research Organization: National Aeronautics and Space Administration, Cleveland, OH (USA). Lewis Research Center
• OSTI ID: 6517401
• Report Number(s): N-90-26170; NASA-TM-103173; E-5551; NAS-1.15:103173; CONF-900720-
• Resource Relation: Conference: 26. AIAA/SAE/ASME/ASEE joint propulsion conference and exhibit, Orlando, FL (USA), 16-18 Jul 1990
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
JET ENGINE FUELS
COMBUSTION KINETICS
CHEMICAL REACTIONS
COMPUTERIZED SIMULATION
GAS TURBINES
IGNITION
MATHEMATICAL MODELS
NUMERICAL ANALYSIS
OXIDATION
PROPANE
SPRAYS
ALKANES
CHEMICAL REACTION KINETICS
FUELS
HYDROCARBONS
KINETICS
MACHINERY
MATHEMATICS
ORGANIC COMPOUNDS
REACTION KINETICS
SIMULATION
TURBINES
TURBOMACHINERY
400800* - Combustion
Pyrolysis
& High-Temperature Chemistry