The classical water hammer equations are developed assuming one-dimensional flow, steady state skin friction, pure liquid flow, elastic behaviour of pipe walls and no fluid-structure effects and uniform geometry. The research reveals that inaccuracies in the prediction of pressure wave attenuation, shape and timing in a number of laboratory and industrial cases originate from violation of these assumptions. Unsteady friction may cause additional damping in the system. Trapped air pocket may generate extreme pressure oscillations in the system.
COBISS.SI-ID: 10588187
Hydraulic shape of the gate and characteristics of flow-passage system govern the magnitude of loads on the gate-body. Theoretical analysis of hydraulic characteristics for vertical leaf-gate is performed at different gate openings. The finite volume method is used as solution tool for governing equations. The computational results are compared with results of measurments from the hydraulically similar gate in laboratory apparatus. The agreement between the results is reasonable allowing the developed model to be used for industrial applications.
COBISS.SI-ID: 10416667