In the present work, characteristics of the flow in the cage of a steam turbine bypass control valve for thermal power plant are investigated. Experimental measurement for wall static pressure has been carried out to validate numerical solutions. And, the flowfield is analyzed by solving steady three-dimensional Reynolds-averaged Navier-Stokes equations. Shear stress transport (SST) model is used as turbulence closure. The effects of the flow area between stages of the cage on the pressure drop are also found.
T. S. Lee and L. C. Leow, 1999, Numerical study on the effects of air valve characteristics on pressure surges during pump trip in pumping systems with air entrainment, Int. J. Numer. Meth. Fluids vol. 29, pp. 645-655
Yoshitaka Hayashi, Koji Kagisaki, Takahuo Yamaguchi, Taichi Sakaguchi, Yoshihisa Naka, Yoshiki Sawa, Shigeaki Ohtake, Hikaru Matsuda, 2001, Clinical application of vacuum-assisted cardiopulmonary bypass with a pressure relief valve, European Journal of Cardio-thoracic Surgery, Vol. 20, pp. 621 -626
CFX-5.7 Solver Theory, Ansys inc., 2004
Menter, F. and Esch, T., 2001, 'Elements of Industrial Heat Transfer Predictions,' 16th Bazilian Congress of Mechanical Engineering (COBEM), Uberlandia, Brazil
Bardina, J. E. Huang, P. G. and Gakley, T., 1997, 'Turbulence Modeling Validation,' AIAA Paper 97-2121
R. S. Amano and G. R. Draxler, 2002, High-Pressure Steam Flow in Turbine Bypass Valve System Part 1: Valve Flow, Journal of Propulsion and Power, Vol. 18, No. 3, pp. 555-563
Z. Mazur, R. Campos-Amezcua, G. Urquiza -Beltran, A. Garci.a-Gutierrez, 2004, Numerical 3D simulation of the erosion due to solid particle impact in the main stop valve of a steam turbine, Applied Thermal Engineering 24 (2004), 1111.1877-1891