Numerical study of cavitating flow inside a flush valve
TypeArticles dans des revues avec comité de lecture
In water supply installations, noise pollution often occurs. As a basic component of a system, a flush valve may frequently be a source of noise and vibration generated by cavitation or high turbulence levels. During valve closing or valve opening, cavitation can be a problem. In order to decrease the noise and to improve the design inside a flush valve, some experimental and numerical analyses were carried out in our laboratories. These analyses led to some improvements in the design of the valves. Cavitation occurrence was more specifically addressed, using numerical simulation, and this is the main aim of the present paper. Particularly, the use of a simplified numerical test without cavitation model is compared with one using a cavitation model. In order to define potential cavitation risks in some parts of the valve, it has been found that a simplified approach provides an accurate overview. Computational Fluid Dynamics (CFD) simulations of cavitating flow of water through an industrial flush valve were performed using the Reynolds averaged Navier-Stokes (RANS) equations with a near-wall turbulence model. The flow was assumed turbulent, incompressible and steady. Two commercial CFD codes (Fluent 6.3 and Star CCM+ 3.04.009) were used to analyse the effects of inlet pressure as well as mesh size and mesh type on cavitation intensity in the flush valve.
Files in this item
Showing items related by title, author, creator and subject.
BAYEUL-LAINE, Annie-Claude; SIMONET, Sophie; ISSA, Abir; BOIS, Gérard (2013)Numerous different experimental and numerical methods have been developed and are already improved in order to get rather good flow descriptions inside pump components. These calculations are generally realized assuming ...
BAYEUL-LAINE, Annie-Claude; SIMONET, Sophie; WILS, Gérard (IPCO, international publisher and Co, 2015)Les hydroliennes permettent la transformation de l’énergie cinétique des courants marins et fluviaux en électricité. Le mouvement des mers et des cours d’eau étant une source quasi-inépuisable d’énergie, un développement ...
BAYEUL-LAINE, Annie-Claude; SIMONET, Sophie (IPCO, international publisher and Co, 2015)Wind energy is mainly used to generate electricity and more and more with a renewable energy source character. Power production from wind turbines is affected by several conditions like wind speed, turbine speed, turbine ...
BAYEUL-LAINE, Annie-Claude; SIMONET, Sophie; BOIS, Gérard (2010)Bien que les éoliennes soient une forme très ancienne d’exploitation du vent, ces dernières quarante dernières années ont vu leur évolution et un développement important de leur conception dans le cadre du développement ...
BAYEUL-LAINE, Annie-Claude; SIMONET, Sophie; BOIS, Gérard (6 th International Conference of Pumps and Fans with compressors and wind turbines, 2013)The present wind turbine is a small one which can be used on roofs or in gardens. This turbine has a vertical axis. Each turbine blade combines a rotating movement around its own axis and around the main rotor axis. Due ...