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Nozzle Numerical Simulations

Nozzle Numerical Simulations. New approach of CFD simulations BGC Meeting 15-09-2017. Basic difference between the models. Reynolds-averaged Navier –Stokes Previous simulations. Large eddy simulation Present simulation. Boundary conditions – Paolo’s simulation.

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Nozzle Numerical Simulations

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  1. Nozzle Numerical Simulations New approach of CFD simulations BGC Meeting 15-09-2017 Przemysław Smakulski

  2. Basic differencebetween the models Reynolds-averaged Navier–Stokes Previoussimulations Large eddy simulation Presentsimulation Przemysław Smakulski

  3. Boundaryconditions – Paolo’ssimulation p_chamber = 0.1 bar p_in =10 bar Nozzleφ30 mm Przemysław Smakulski

  4. CFD simulation. Chamber pressure 𝑝=0.1 [𝑏𝑎𝑟] RANSmodel SteadyState LES model TransientSelectedtime: Convergencecriteria: RMS < Przemysław Smakulski

  5. CFD simulation. Chamber pressure 𝑝=0.1 [𝑏𝑎𝑟] RANS model SteadyState ??? LES model TransientSelectedtime: Convergence criteria: RMS < Przemysław Smakulski

  6. Theoretical Mach disc dimension – presentsimulationcomparison Przemysław Smakulski

  7. Convergencecriteria (RMS) in model with LES RMS <10-6 Przemysław Smakulski

  8. Forming a jet – first s Przemysław Smakulski

  9. Statistics Przemysław Smakulski

  10. T-s diagram for nitrogen p = 10 bar Gas N2 p = 1 mbar Isentropicexpansion Real process Gas/Liquid N2 Solid N2 Przemysław Smakulski

  11. Temperature profile Przemysław Smakulski

  12. De Laval micro nozzle [1] SEM image of the throat and diverging section of themicro nozzle [1]. Throatarea: 0.0625 [1] - K. Chen, M. Winter, R.F. Huang, Supersonicflow in miniaturenozzles of planarconfiguration, J. MicromechanicsMicroengineering. 15 (2005) 1736–1744. Przemysław Smakulski

  13. Simulation of de Lavalnozzle Residiual RMS for SteadyStatecalculations Przemysław Smakulski

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