Basic Instability Mechanisms in Chemically Reacting Subsonic and Supersonic Flows.
Abstract
Simultaneous measurements of velocity (in a direction normal to the flame brush) and temperature in premixed, od-stabilized, lean methane/air V-flames demonstrated the presence of high-frequency fluctuations within slowly drifting flame brushes, thus indicating a structure different from that of a simple wrinkled-laminar flame. Both the velocity and the temperature fluctuations gave maximum RMS values at a position somewhere between the unreacted and the product gases. Furthermore, cross-correlation coefficients of these simultaneous signals assumed rather high values within the reaction zone, suggesting the possibility that these fluctuation might be induced by the same governing mechanism (which, according to the theory reported previously, was due to the coupling between chemical kinetics and turbulence). A paper on the genesis of transverse waves in gaseous detonations was published in Combustion and Flame. A manuscript on the thermal structure of turbulent flames was submitted for presentation at the Fall Technical Meeting of the Eastern Section of the Combustion Institute. Another manuscript on turbulence-combustion interactions was in preparation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 22, 1986
- Accession Number
- ADA174520
Entities
People
- Tau-yi Toong
Organizations
- Massachusetts Institute of Technology