Fluids

Fluids

Flamelet Generated Manifold for Premixed Combustion

    • krany3
      Subscriber

      I'm simulating methane-air premixed combustion using Flamelet Generated Manifold model in partially premixed combustion. I've only one inlet, where the premixed fuel and oxidizer enter. What should I input for the fuel composition and oxidizer composition on the boundary ? 

    • Rob
      Ansys Employee

      See https://forum.ansys.com/forums/topic/pre-mixed-combustion-using-finite-rate-eddy-dissipation-model/

    • seeta gunti
      Ansys Employee

      Hello Krany,


      When you have one inlet with premixed fuel and oxidizer enter, you can not use partially premixed combustion model. Either you need to use premixed combustion or finite rate eddy dissipation model.  rwoolhou is shared the right thread for premixed combustion with LFR /EDM. Please go thorugh the link and let us know if you have further questions.


      Regards,


      Seeta


       

    • krany3
      Subscriber

      I've gone through a few papers where they've used partially premixed model to simulate premixed combustion.

    • seeta gunti
      Ansys Employee

      Hello Krany,


      If there is single inlet, you have mixture of fuel and air is coming from the inlet, the how do you say that system as partially premixed system. If you have two inlets, one of the inlet could be mixture of your fuel and air and second inlet could be pure oxidizer or fuel. If you are not having two inlets, we can not model that system as partially premixed systems.


      Regards,


      Seeta


       

    • Faina27
      Subscriber
      But how can we do in this case, there is no mixture (air-methane) in premixed combustion and where can we inject the equivalence ratio?
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