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3D Design

3D Design

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  3. ANSYS Forte port fuel injection, adding a second fuel at the inlet of piston com

ANSYS Forte port fuel injection, adding a second fuel at the inlet of piston com

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    • May 11, 2025 at 1:43 pm
      Hasan
      Subscriber

      I was looking at ANSYS Forte tutorial which uses Gasoline_1comp_49sp.cks as a fuel with the following breakdown; o2=0.1967

       

      h2o=0.0089

       

      co2=0.0192

       

      ic8h18=0.0562

       

      n2=0.7190.

       

      The question is how do I add another fuel to ic8h18?:Do I just change the ic8h18 fraction and add another fuel by clicking the pencil icon?

       

       

      Tutorial link: https://ansyshelp.ansys.com/public/account/secured?returnurl=/////Views/Secured/corp/v242/en/forte_tut/i32376.html

    • June 4, 2025 at 3:52 pm
      jcooper
      Ansys Employee

      Hi Hasan: 

      If your setup uses the flame speed model, you will not be able to add to the fuel mixture.  The Flamespeed library is setup to account for the single fuel, ic8h18, so the added specie will not be treated as a reactant. The reaction mechanism may not be tuned to accomodate this additional fuel either, depending on what it is.

    • June 12, 2025 at 10:09 am
      Hasan
      Subscriber

      How do I resolve this? Tried so many solutions . I t says "bad allocations" , "exceptional alloacation" and then nothing happens.

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