【摘要】 综合应用速度系数法和相似换算法设计了混流泵叶轮,在Pro/E平台上采用双三次Bezier曲面实现扭曲叶片造型,运用Gambit软件为叶轮内流道划分网格和定义边界;基于雷诺时均方程、标准k-ε湍流模型和SIMPLE算法,采用Fluent软件模拟了设计工况下的叶轮内部三维流场,得到了流速分布和压力分布图,并分析了它们的分布规律;在清水试验台上进行了性能测试,结果表明所设计的混流泵满足设计要求。更多还原

【Abstract】 A mixed-flow pump hydraulic model was designed using velocity modulus and similar conversion method. To investigate the 3-D turbulent flows in impeller passage of mixed-flow pump, its blades were modeled by Pro/E software with bicubic Bezier curve surfaces. Utilizing Gambit software to generate the unstructured grids of the passage in impeller and define its boundary conditions, the internal 3-D uncompressible turbulent flows of impeller at design condition were simulated by Fluent software on the basis of the Reynolds averaged Navier-Stokes equations, standard k-ε turbulent model and SIMPLE arithmetic. The calculated velocity distributions and pressure distributions of the turbulent flow in the mixed-flow pump were obtained and analyzed. Finally, the performance tests were carried out, and the experimental results showed that the pump performance could meet the design requirements.更多还原