Abstract
In order to prevent cavitation damages and vibration, and to estimate load for structural design, it is nessesary to know the pressure characteristics of conduit pipes. Hydraulic model tests are executed to examine the pressure characteristics of bent circular conduits, especially to know the effects of curvature radius and refraction angle of approximated type using straight pipes. Experimental results of inside wall pressure are compared with calculation results assuming two dimensional potential flow which circulates around concentric circle, and the effect of refraction of approximated type and secondary flow generated by bent flow are cleared.
