SIMPLIFIED SOLUTION OF SURGING AT THE SURGE CHAMBER AT THE INITIALLY FULL-FLOWING TAIL-RACE TUNNEL DUE TO LOAD DECREASE

Abstract

Simplification is shown of solution of the surging at the surge chamber at the initially full-flowing tail-race tunnel developed in the previous paper by the same author. Approximation is made to the governing equations to make the graphical solution of Schoklitsch applicable. Comparison of the solutions by the graphical method is made with the results obtained from the laboratory investigation described in the previous paper. Good agreement between theory and experiment is affirmed. The simplified method of solution is shown to be sufficiently adequate for practical applications.