期刊名称:IOP Conference Series: Earth and Environmental Science
印刷版ISSN:1755-1307
电子版ISSN:1755-1315
出版年度:2012
卷号:15
期号:6
出版社:IOP Publishing
摘要:CFD becomes an everyday tool in the development process of water turbines and pumps. The development of new models for steady state and unsteady calculations is very fast, but unfortunately some procedures in the development process are still very time-consuming. Some special numerical analysis takes more than a month of the CPU time although a huge number of processors are used. Hereafter are presented some new ideas on how comp utational time for steady state and unsteady calculations for incompressible fluids can be reduced by orders of magnitude for some particular cases. In the development process of new hydraulic turbines when high energetic and cavitation characteristics are expected, usually a huge number of different geometries and a lot of operating regimes should be analysed. To obtain accurate results the mesh needs to follow some quality criteria and should be fine enough. Considering all above mentio ned facts, the computational time can be a bottleneck for efficient acco mplishment of industrial projects