The RNG κ-ε turbulence model was used to numerically analyze the DN600 central butterfly valve based on Fluent software.The distribution of pressure and velocity changes in the pipeline under different opening degrees and flow rates was simulated respectively,and the relationship curves between the key hydraulic parameters such as head loss,re-sistance coefficient and cavitation coefficient,inlet flow rate and valve opening were calculated.The results can provide technical support for the analysis of hydraulic transition process of pumping station.The results show that when the pump station is running stably,the opening of the butterfly valve should be greater than 40°,and the butterfly valve fast closing angle should be above 55.6% when the pump station stops in an accident.The results can provide technical sup-port for analysis of hydraulic transition process in pumping station.
关键词
数值模拟/Fluent/蝶阀/水力参数/流场
Key words
numerical simulation/Fluent/butterfly valve/hydraulic parameters/flow field
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