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CUSTOMIZED UNSTEADY INLET BOUNDARY CONDITION ( OpenLabs)

sriluta

Hey, iam Simulation the flow in an axial turbine. The flow comes from the rotational detonation combustion, where 2 shockwaves travels around the annulus in the  turbine. I just simulate 15 stator blades without rotor blades, so there is no rotation speed.  At the Inlet of my domain for my unsteady Simulation I have the unsteady inlet boundary conditions where the total pressure and total temperature are functions of the time and the azimuthal angle. So in FINE/Open-Tutorial OpenLabs Tutorial 2: Customized Unsteady Inlet Boundary Condition in the  FINE/Open-manual is the following equation.  

N is the number of the upstream rotor blades and    is the period of the upstream rotor blade passing. I don't know what to do with these two parameters, since I just have stator blade and no rotor blades. For tt and pt I have a profile that depends to the azimuthal angle as you can see below.  I think independently, that I will implement the function with OpenLabs these two profiles must be inserted in domain/inlet for absolute total pressure and absolute total temperature as profiles, correct? By the way, my goal is to establish or prove that the strong pressure fluctuations can be strongly damped by the stator blades, greetings Hussein 
  • Colinda
    0

    Hi Hussein,


    This is the same question as the one in the OpenLabs section "Unsteady inlet boundary condition with OpenLabs"?
    If not, could you please elaborate on the difference?

    Best regards,
    Colinda

  • sriluta
    +1 in reply to Colinda

    Hey, oh yes sry. Problem is solved, i use the functions of the fourier series, greetings Hussein

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