Repository: Freie Universit├Ąt Berlin, Math Department

Modeling the kinetics of the Shockless Explosion Combustion

Berndt, P. and Klein, R. (2017) Modeling the kinetics of the Shockless Explosion Combustion. Combustion and Flame, 175 . pp. 16-26.

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Abstract

The Shockless Explosion Combustion (SEC) is a novel approach to approximating constant volume combustion in gas turbines. It promises an efficiency gain comparable to that of pulse detonation combustion without the drawbacks associated with detonations. It utilizes quasi-homogeneous combustion of a volume of fuel & air mixture to avoid strong shock waves, similar to the Homogeneous Charge Compression Ignition (HCCI) process in internal combustion engines. Recharging is handled in analogy to a pulse jet combustor through resonant pressure waves in the combustion chamber. To achieve nearly homogeneous auto-ignition, a stratified layer of fuel/air is set up such that almost constant time to ignition remains across the charge once the recharging process is completed. Here we introduce simplified chemical kinetics models that enable efficient computational modeling of the entire process. Based on numerical simulations we assess essential influences of chemical kinetics on the subtle gasdynamics involved in the SEC process and discuss results on its feasibility.

Item Type:Article
Uncontrolled Keywords:Shockless explosion combustion; Quasi-homogeneous auto-ignition
Subjects:Mathematical and Computer Sciences > Mathematics > Applied Mathematics
Divisions:Department of Mathematics and Computer Science > Institute of Mathematics > Geophysical Fluid Dynamics Group
ID Code:1932
Deposited By: Ulrike Eickers
Deposited On:09 Aug 2016 13:57
Last Modified:02 Feb 2017 10:01

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