PERFORMANCE PREDICTION METHOD OF FRANCIS HYDRO TURBINE

摘要

The present invention relates to a method for predicting the performance of the Francis aberration, and more particularly, to a method for predicting the performance of the Francis aberration for accurately deriving the efficiency according to the occlusion rate of a runner blade of the Francis aberration. The present invention comprises the steps of: a) deriving a first function that is a quadratic function capable of deriving efficiency by using the flow rate as a variable for each occlusion rate; b) deriving a second function that is a quadratic function capable of deriving coefficient values of each term by using the occlusion rate as a variable in the plurality of derived first functions; and c) deriving an efficiency according to an inputted random occlusion rate using the first function and the second function.