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2013 | Vol. 17, No 3-4 | 145--154
Tytuł artykułu

Application of hybrid CFD/CAA technique for modeling pressure fluctuations in transonic flows

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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Solving AeroAcoustics (CAA) problems by means of the Direct Numerical Simulation (DNS) or even the Large Eddy Simulation (LES) for a large computational domain is very time consuming and cannot be applied widely for engineering purposes. In this paper in-house CFD and CAA codes are presented. The in-house CFD code is based on the LES approach whereas the CAA code is an acoustic postprocessor solving non-linearized Euler equations for fluctuating (acoustic) variables. These codes are used to solve the pressure waves generated aerodynamically by a flow over a rectangular cavity and by the vortex street behind a turbine blade. The obtained results are discussed with respect to the application of the presented numerical techniques to pressure waves modeling in steam turbine stages.
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Rocznik
Strony
145--154
Opis fizyczny
Bibliogr. 7 poz., rys.
Twórcy
autor
  • Institute of Power Engineering and Turbomachinery, Silesian University of Technology, Konarskiego 18, 44-100 Gliwice, Poland, slawomir.dykas@polsl.pl
  • Institute of Power Engineering and Turbomachinery, Silesian University of Technology, Konarskiego 18, 44-100 Gliwice, Poland
autor
  • Institute of Power Engineering and Turbomachinery, Silesian University of Technology, Konarskiego 18, 44-100 Gliwice, Poland
Bibliografia
  • [1] Dykas S, Wróblewski W, Rulik S and Chmielniak T 2010 Archives of Acoustics 35 (1) 35
  • [2] Ahuja K K and Mendoza J 1964 Effects of Cavity Dimensions, Boundary Layer, and Temperature on Cavity Noise with Emphasis on Benchmark Data to Validate Computational Aeroacoustic Codes, NASA CR 4653
  • [3] Weyna S 2005 Acoustic Energy Dissipation of Real Sources, WNT, Warsaw (in Polish)
  • [4] Takeda K and Shieh C M 2013 Int. J. Comput. Fluid Dynamics 18 (6) 439
  • [5] Wróblewski W, Dykas S, Gardzilewicz A and Kolovratnik M 2009 ASME J. Fluids Engineering 131 041301-1
  • [6] Dykas S, Rulik S and Wróblewski W 2012 Open J. Fluid Dynamics 2 65
  • [7] Wróblewski W 2000 Numerical Simulation of Flow Phenomena in Turbines, Silesian University of Technology Publishing, Energetyka, 132 (in Polish)
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.baztech-29a7cd03-a6d5-4a3a-abb3-02d464ddedbb
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