Abstract
The flow in a rotating Pelton bucket is simulated by a Moving-Particle Semi-Implicit Method (MPS). The computed flow pattern is varied with the operating condition, especially, in the high unit speed operating condition, the spilt flow from the cutout can be simulated. The corresponding output power of a runner is estimated under the assumption that each bucket has the same torque variation with its rotation as the computed bucket. The output power of the runner has a tendency similar to that of the model test.
