Partially Premixed Combustion And Co-axial Combustor

Partially Premixed Combustion and Co-axial Combustor

Introduction Partially Premixed Combustion

In this tutorial, we provide guidelines for modeling and simulation of a reacting flow using the partially premixed combustion model.

You will also learn how to do the following through this tutorial:

  • Creating PDF ( probability density function ) fi le for a combustion system.
  • PDF chemistry modeling and also defining ANSYS Fluent inputs.
  • Using the partially premixed Zimont turbulent flame speed model for the simulation of the combustion system.
  • setting up the solver and solving.
  • Also, postprocess the results for investigating the premixed and non-premixed properties.

Problem Description of Partially Premixed Combustion

At the center of the combustor, we have a swirler which introduces the lean methane/air mixture (equivalence ratio=0.8) of temperature 300 K with a swirl velocity of 30 m/s and an axial velocity of 50 m/s. for the stabilization of the flame, pure air at an axial velocity of 10 m/s and temperature 650 K is introduced from the outer tube. CH4, O2, CO2, CO, H2O, and N2 are the major species in the combustion process.

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