8.2.4. Turbulent Flame Speed Models - Ansys Australia

Supersonic flame kernels are self-propagating and respond to the equivalence ratio in a fashion that is similar to low speed flames. William Perry Oral History | Miller Center Turbulent flame speed is a characteristic of the rate of propagation of a flame in a turbulent flow field, such as that in a gas turbine combustor or a reciprocating internal combustion engine. In the study of turbulent combustion phenomena, turbulent flame speed combines the fields of chemical kinetics and fluid mechanics. In general, turbulence in a combusting flow causes a significant... Everywhere in internet and books that introduce to fluid dynamics mention cigarette smoke as a classical example of turbulent flow. This is the William Perry Oral History interview. It is a part of the Clinton Presidential History Project. Thank you very much for agreeing to participate The growth, shape and internal kernel dynamics are investigated. But the velocity, in other words the Reynolds number, is small. Drawing motivation from vortex ring literature, the ring propagation velocity is used as the characteristic velocity and a new flame speed scaling is proposed. Schlieren photography provides flame images for growth rate statistics and particle image velocimetry (PIV) provides turbulence statistics and investigation of internal kernel dynamics. High Kinetic Flame Speed 8.2.4. Turbulent Flame Speed Models - Ansys Australia High Kinetic Flame Rate Baroclinicity, resulting from pressure-density misalignment, creates a reacting vortex ring structure. Results are presented for three Mach numbers, four equivalence ratios, and three turbulence generators.