Dissipation Elements at the Flame Surface in Methane Diffusion Flame (B. Hentschel and D. Denker)

Flame in Slotburner (S. Kruse)

Particle Charged Flow (E. Varea)

DNS of a scaled-up Diesel injector

Dissipation Element Analysis of Methane Diffusion Flame (D. Denker)

DNS of a scaled-up Diesel injector (M. Bode)

Quartz nozzle sampling in a methane counterflow flame (M. Baroncelli)

Oxyfuel coal combustion in a hot gas stream (D. Felsmann)

Turbulent/non-turbulent interface in high Reynolds number Jet (D. Denker and B. Hentschel)

Combustion Technology II

The class takes place in the winter semester.


 

Dates

Lecture

Thursdays, 16:15--17:45, EPH (starting 27.10.2016)

Exercise

Fridays, 12:15--13:00, EPH (starting 28.10.2016)

Exam

Friday, 21.08.2017

Office hours

Fridays (notification required)


Lecture

Download TV II Script (English)

Slides: -> L2P


Exercise

Material: -> L2P


Course Description of Lecture and Exercise

 Laminar Flames

  • Chemical kinetics: Elementary reactions, reaction rates, catalysis, combustion of hydrocarbons, reaction mechanisms, emissions
  • Laminar premixed flames: Overview and introduction, laminar burning velocity , thermal diffusive instabilities, flame structure
  • Laminar diffusion flames: Overview and introduction, mixture fraction, laminar jet flames

Turbulent Combustion

  • Theory of turbulent Flows: Characteristics of turbulent flows, averaging/decomposition of statistical properties, specific flow cases (e.g. isotropic turbulence), derivation of the Reynolds-equation, k- and epsilon-equation, turbulence models, turbulent length and time scales, Kolmogorov hypothesis, balance equation of reacting scalars
  • Turbulent premixed flames: Length- and velocity scales of  turbulent combustion, regime diagram, turbulent flame velocity
  • Turbulent diffusion flames: turbulent jet flames

Introduction to modeling of turbulent combustion

  • Simple models illustrated by example of the flow solver "Fluent"
  • Modeling of turbulent premixed flamers: Introduction to statistical Methods (PDF, CDF,...), BML-Model, G-equation/Level-Set-Ansatz
  • Modeling of turbulent diffusion flames: Flamelet-Koncept

Multiphase combustion

  • Engineering Application
  • Phenomenological description of the breakup process
  • Single droplet flame
  • Modeling and simulation of multiphase flows

 

 

Contact Person

 Dominik Denker, M. Sc.

Dipl.-Ing. Fabian Hennig


Important Dates

Lecture: Thursdays, 16:15--17:45, EPH

Exercise: Fridays, 12:15--13:00, EPH

Exam: Friday, 21.08.2017