数值模拟冲击式水轮机内部非定常流动

Numerical Simulation of Unsteady Flow on Pelton Buckets

提出了用动画解析法解析冲击式水轮机非定常内部流动的方法 ,此法提供了如何将非定常流动按照时间顺序离散成动画单元 ,并通过拉格郎日法对流体质点的加速度进行积分来求出水斗内非定常流动的分布首次解析了其内部流动 .

An animated cartoon method to analyze unsteady internal flow of Pelton turbines is developed. The method shows how to discretize the real unsteady free sheet flow by a sequence of gradual time shifting frames. In every frame, the distribution of the free water sheet flow in buckets is computed Langrangianly by intergating the various acceleration on the flow particles, and the internal flow is analyzed. The agreement between the computed result and the visual observation result proves the correction of the method.