Modelling the Flow Conditions Over a Side Channel Spillway of the Pilchowice Storage Reservoir on the Bóbr River

摘要: In the chapter, results of numerical modelling flow conditions by flume side-channel spillway Pilchowice storage reservoir on Bobr River are presented, for which some reconstruction outlet installations necessary. Modelling was preceded an analysis functioning principles devices this type, given in currently available literature. also analytical calculations, determining a capacity ability as function valid damming levels and takes over waters overflowing conveys them to multistage cascade, connecting with downstream river section. Analytical such allowed us derive differential equation describing course water line along spillway. Numerical calculations were carried out using authors’ computer program. Calculations made actual state object several proposed solutions its reconstruction, assuming that due hard workability rock foundation there necessity executing building works essentially minimum range. The confirm design underlined literature, extorting their working every operating not submerged. They evident ensures safety terms computational discharges, significantly exceeding nominal installation current technical design. analysis, attention is paid possibility outright leading longitudinal bottom slope greater than zero, showing profit from solution.