排灌机械工程学报2012，Vol.30Issue(1)：30-34,5.DOI:10.3969/j.issn.1674-8530.2012.01.007
基于CFD技术的核电站上充泵全流场数值模拟
CFD numerical simulation of flow field in charging pump for nuclear power plants
摘要
Abstract
In order to study the internal flow mechanism of the multistage centrifugal charging pump in nuclear power plants,the steady 3D turbulent flow in such a pump in a 1 000 MW nuclear power plant has been simulated numerically by using CFD technique, where the k - s standard turbulence model and SIMPLEC algorithm were adopted. The velocity, pressure and turbulent kinetic energy distributions in the impeller and diffuser of every stage were obtained; through those variables the internal flow characteristics were analyzed. The results showed that a local low pressure zone appears in the gap between the impeller and the diffuser. An non-uniform velocity distribution and reverse flow pattern, which are related to extra hydraulic losses, present in the region between the impeller outlet and the diffuser inlet. In that region, the turbulent kinetic energy is not only much high but also subject to very non-uniform profile, generating larger energy loss. By means of the numerical simulations the regions with remarked hydraulic loss have been identified. This is quite helpful to optimize the pump design in future.关键词
核电站/上充泵/计算流体动力学/流场/数值模拟Key words
nuclear power plant/charging pump computational fluid dynamics/flow field/numerical simulation分类
农业科技引用本文复制引用
朱荣生,王韬,付强,陈景俊..基于CFD技术的核电站上充泵全流场数值模拟[J].排灌机械工程学报,2012,30(1):30-34,5.基金项目
国家科技支撑计划(2011BAF14B04) （2011BAF14B04）
江苏省"十一五"科技支撑计划项目(BE2010156) （BE2010156）
江苏高校优势学科建设工程资助项目 （）
