Identification of local extinction topology in axisymmetric bluff-body diffusion flames with a reactedness-mixture fraction presumed probability density function model

Koutmos, P.; Marazioti, P.

doi:10.1002/1097-0363(20010430)35:8<939::aid-fld122>3.0.co;2-2

Cited by 1 publication

(2 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The bluff body stabilized turbulent flames have received significant attention in recent years and been studied experimentally and numerically [9,10,[15][16][17][18][19]28,29].…”

Section: Flow and Boundary Conditionsmentioning

confidence: 99%

“…The same flame has also been modeled using a conditional moment closure (CMC) model by Kim et al [14] and a cubic k Ϫ ⑀ model by Merci et al [15]. Similar bluff-body stabilized flames with various geometrical configurations and fuels have also been investigated numerically in the literature using different approaches including the standard k Ϫ ⑀ model [16], Reynolds stress models [16], the conditional moment closure model [17], PDF models [16,18], and large eddy simulation (LES) [19].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

PDF modeling of a bluff-body stabilized turbulent flame

Muradoğlu

Liu

Pope

2003

Combustion and Flame

View full text Add to dashboard Cite

The velocity-turbulent frequency-compositions PDF method combined with the consistent hybrid finite volume (FV)/particle solution algorithm is applied to a bluff-body stabilized turbulent flame. The statistical stationarity is shown and the performance of the PDF method is assessed by comparing the mean fields with the available experimental data. The effects of the model constants C 1 in the turbulence frequency model and C in the mixing model on the numerical solutions are examined and it is found that all the mean fields are very sensitive to the changes in C 1 while only the mixture fraction variance seems to be very sensitive to the changes in C but not the other mean fields. The spatial and bias errors are also examined and it is shown that the hybrid method is second order accurate in space and the bias error is vanishingly small in all the mean fields. The grid size and the number of particles per cell are determined for a 5% error tolerance. The chemistry is described by the simplest possible flamelet/PDF model. Hence the main focus of the paper is on the accurate calculations of the mean flow, turbulence and mixing, which lays the foundation for future work in which the chemistry is described in greater detail.

show abstract

“…The bluff body stabilized turbulent flames have received significant attention in recent years and been studied experimentally and numerically [9,10,[15][16][17][18][19]28,29].…”

Section: Flow and Boundary Conditionsmentioning

confidence: 99%