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- W4382045268 abstract "Hydroelectric power station is the most economical unit for generating electricity for the nation. High head hydropower plant needs construction of a safe water conveyance system to withstand high-pressure surge. The conveyance system of the high head hydropower plant consists of a long tunnel and penstock. Pressure transients are likely to occur in such a conveyance system when there is a change in turbine discharge. Such conditions become highly critical under sudden closure of turbines. The effect of turbine discharge changes can be simulated in a simplified manner as valve closure. In this paper, an attempt has been made to study water mass oscillation in long tunnel under various closure schedules of valve placed downstream of long horizontal pipe. The upstream boundary condition is considered as a constant head boundary. The study basically focused on the use of method of characteristics for solving equation of continuity and equation of momentum for unsteady state flow. The valve closure schedules are assumed to have two stage closures with linear discharge reduction. The entire length of pipe is divided into various sections and pressures and discharges are found at all the nodes. The pressure variations at key locations in the conveyance system are plotted for different valve closure schedules. The various strategies of valve closures are attempted for evaluation of the peak pressure at key locations. It was observed that the strategy involving reduction in valve closure rate in the second stage significantly restricted the rise in peak pressure." @default.
- W4382045268 created "2023-06-27" @default.
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- W4382045268 date "2023-01-01" @default.
- W4382045268 modified "2023-10-14" @default.
- W4382045268 title "Effect of Valve Closure Schedule on Peak Pressure in Pressurised Conduit Under Transient Condition Using Method of Characteristics" @default.
- W4382045268 cites W4232068220 @default.
- W4382045268 doi "https://doi.org/10.1007/978-981-19-9151-6_17" @default.
- W4382045268 hasPublicationYear "2023" @default.
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