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Investigation the effects of injection pressure and compressibility and nozzle entry in diesel injector nozzle’s flow

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      Abstract

      Investigating nozzle’s orifice flow is challenging both experimentally and theoretically. This paper focuses on simulating flow inside diesel injector nozzle via Ansys fluent v15. Validation is performed with experimental results from Winkhofler et al (2001). Several important parameters such as mass flow rate, velocity profiles and pressure profiles are used for this validation. Results include the effects of contraction inside nozzle’s orifice, effect of compressibility; effect of injection pressures and several orifice entries are also simulated in this study. For considering the effect of compressibility a user defined function used in this simulation. Cavitation model which is used in this simulation is Singhal et al. cavitation model. Presto discretization method is used for Pressure equation and second upwind discretization method is used for Momentum equation. Converging Singhal et al. cavitation model is very challenging and it needs several efforts and simulations.

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      Author and article information

      Journal
      Journal of Applied and Computational Mechanics
      Shahid Chamran University of Ahvaz
      01 April 2015
      : 1
      : 2
      deb217c4a5154abeb3c1e3ef0597587f

      This work is licensed under a Creative Commons Attribution Non Commercial 4.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc/4.0/legalcode

      Product
      Self URI (journal page): http://jacm.scu.ac.ir/
      Categories
      Mechanics of engineering. Applied mechanics
      TA349-359
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