Die Struktur turbulenter Freistrahl‐Diffusionsflammen

Peters, N.

doi:10.1002/cite.330551002

Cited by 6 publications

(3 citation statements)

References 41 publications

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“…Here, the value of u inj d inj = T is taken to be a tunable parameter, and the value 45 was found to give best agreement with the experimental results. Peters [26] suggests a value between 60 and 70 and Schlichting [27] suggests a value of 61; however, both of these are for low-speed jets, so the lower value we have chosen represents some mixing suppression due to the high speed of the flow in question. The turbulent Schmidt number is Sc T 0:7.…”

Section: B Assumed-mixing Modelmentioning

confidence: 97%

“…In the following, we model D T as [26] D T T Sc T (19) where u inj d inj = T 45. Here, the value of u inj d inj = T is taken to be a tunable parameter, and the value 45 was found to give best agreement with the experimental results.…”

Section: B Assumed-mixing Modelmentioning

confidence: 99%

“…In the flamelet model, a turbulent diffusion flame is considered to be an ensemble of laminar flamelets [14,26]. At sufficiently large Damköhler number or sufficiently high activation energy, chemical reactions and heat transfer occur in thin layers.…”

Section: Flamelet Combustion Model For Diffusion Flamesmentioning

confidence: 99%

See 2 more Smart Citations

Reduced-Order Modeling of Turbulent Reacting Flows with Application to Ramjets and Scramjets

Torrez

Driscoll

Ihme

et al. 2011

Journal of Propulsion and Power

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A new engine model has been developed for applications requiring run times shorter than a few seconds, such as design optimization or control evaluation. A reduced-order model for mixing and combustion has been developed that is based on nondimensional scaling of turbulent jets in crossflow and tabulated presumed probability distribution function flamelet chemistry. The three-dimensional information from these models is then integrated across cross-sectional planes so that a one-dimensional profile of the reaction rate of each species can be established. Finally, the one-dimensional conservation equations are integrated along the downstream axial direction and the longitudinal evolution of the flow can be computed. The reduced-order model accurately simulates real-gas effects such as dissociation, recombination, and finite rate chemistry for geometries for which the main flow is nearly onedimensional. Thus, this approach may be applied to any flowpath in which this is the case; ramjets, scramjets, and rockets are good candidates. Comparisons to computational fluid dynamics solutions and experimental data were conducted to determine the validity of this approach.

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Section: B Assumed-mixing Modelmentioning

confidence: 97%

Section: B Assumed-mixing Modelmentioning

confidence: 99%