Abstract
A theoretical study on effects of flow expansion and fast transport processes accelerated at high temperature on the flame and flow field of a tubular flame was made by extending the method based on a similar solution to the compressible flow. The numerical solution was compared with that of the incompressible flow to reveal the strong coupling between flame and flow. The flows normal and parallel to the flame are accelerated by the flow expansion, while the circumferential flow is decelerated because of the increased viscosity. The flame is shifted outward, and the reaction zone width is largely extended due to the accelerated transport processes, resulting in an increase in the unburned fuel remaining on the axis. The extinction Reynolds number is somewhat reduced because of an increase in the stretch due to the flow expansion. However, the introduction of suitably defined flame stretch and mass burning velocity provides the response curve which exhibits a rather good agreement with those of the asymptotic analysis and the incompressible flow solution.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
