为了提高水轮机性能,最重要的是研究转乾的内部流态,目前大多通过模型试验来测量其流动特性。但对于水轮机转轮内部这种旋转流场,限于目前的量测手段,要较准确地测量必将花费大量的资金和时间。另一类研究方法是通过数值模拟来计算转轮的内 In order to improve the performance of the turbine, it is of utmost importance to study the internal flow regime that is diverted to dryness. At present, the flow characteristics are mostly measured by model tests. However, the rotating flow field inside the runner of the turbine is limited to the current measuring means, and it is bound to spend a large amount of money and time to accurately measure the rotating flow field. Another type of research method is to calculate the inside of the runner by numerical simulation