流体机械Issue(11)：1-5,19,6.DOI:10.3969/j.issn.1005-0329.2013.11.001
三偏心蝶阀的流场和阻力特性研究
Study of Flow Field and Resistance Characteristics of Triple Eccentric Butterfly Valve
摘要
Abstract
In order to obtain correct flow resistance coefficients of a triple eccentric butterfly valve with 680mm diameter, flow resistance test was developed for different valve disk positions and inlet air velocities .Then a set of numerical model was set up based on test results to get flow details inside the tested valve .SST model was selected as the turbulence model .This numerical model was applied to predict the flow field and flow resistance coefficients of the tested valve for disk positions 90°, 70°and 50° (where 90°was the fully opened position ).Test results show that flow coefficient of 50°disk position is the same as nine times as that of 90°position.They also show that the tested valve has a flow coefficient for 90°which is six times bigger than that of the symmetric valve for 90°.Numerical results show that there is more vortex around the disk than that of the symmetric valve for 90°, so the shape of the tested valve disk can be optimized to reduce the flow coefficient .And there is torque acting on disk pro-duced by the air flow with the disk positions from big degrees to fully closed .It is helpful to close the disk .关键词
三偏心蝶阀/流阻系数/湍流模型/数值模拟Key words
triple eccentric butterfly valve/flow resistance coefficient/turbulence model/numerical simulation分类
机械制造引用本文复制引用
张勤昭,刘福生,王宏..三偏心蝶阀的流场和阻力特性研究[J].流体机械,2013,(11):1-5,19,6.基金项目
国家重大科技专项经费资助项目 （）
