Simulations of cavity-stabilized flames in supersonic flows using reduced chemical kinetic mechanisms

Jiwen Liu, Chung Jen Tam, Tianfeng Lu, Chung King Law

Research output: Chapter in Book/Report/Conference proceedingConference contribution

32 Scopus citations

Abstract

The VULCAN CFD code integrated with a reduced chemical kinetic mechanism was applied to simulate cavity-stabilized ethylene-air flames and to predict flame stability limits in supersonic flows based on an experimental study. A 15-step reduced kinetic mechanism for ethylene was systematically developed through skeletal reduction with a directed relation graph and time scale reduction based on quasi-steady state assumptions. The accuracy of the reduced kinetic mechanism and its implementation in the VULCAN code were demonstrated in an auto-ignition problem with a range of parameters. 3D simulations were then carried out for cavity-stabilized flames at different fuel flowrates and turbulent Schmidt numbers. For comparison with the performance of the present reduced mechanism, a 3- and a 10-step global kinetic model were applied to simulate the same cavity combustor, and the results show that the 15-step reduced model predicts experimental results much better than the 3- and 10-step models. The importance of including accurate chemical kinetics in CFD simulations is therefore demonstrated.

Original languageEnglish (US)
Title of host publicationCollection of Technical Papers - AIAA/ASME/SAE/ASEE 42nd Joint Propulsion Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
Pages5296-5310
Number of pages15
ISBN (Print)1563478188, 9781563478185
DOIs
StatePublished - 2006
EventAIAA/ASME/SAE/ASEE 42nd Joint Propulsion Conference - Sacramento, CA, United States
Duration: Jul 9 2006Jul 12 2006

Publication series

NameCollection of Technical Papers - AIAA/ASME/SAE/ASEE 42nd Joint Propulsion Conference
Volume7

Other

OtherAIAA/ASME/SAE/ASEE 42nd Joint Propulsion Conference
CountryUnited States
CitySacramento, CA
Period7/9/067/12/06

All Science Journal Classification (ASJC) codes

  • Space and Planetary Science
  • Energy(all)
  • Aerospace Engineering
  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Simulations of cavity-stabilized flames in supersonic flows using reduced chemical kinetic mechanisms'. Together they form a unique fingerprint.

  • Cite this

    Liu, J., Tam, C. J., Lu, T., & Law, C. K. (2006). Simulations of cavity-stabilized flames in supersonic flows using reduced chemical kinetic mechanisms. In Collection of Technical Papers - AIAA/ASME/SAE/ASEE 42nd Joint Propulsion Conference (pp. 5296-5310). (Collection of Technical Papers - AIAA/ASME/SAE/ASEE 42nd Joint Propulsion Conference; Vol. 7). American Institute of Aeronautics and Astronautics Inc.. https://doi.org/10.2514/6.2006-4862