Numerical investigation of effective surge tank dimensions in hydropower plants under various hydraulic conditions

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Date

2013

Author

Berberoğlu, Pınar

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In water conveyance systems, sudden changes in the flow velocity cause a phenomenon called waterhammer associated with high pressure head changes. Unless a control device is used as a precaution, waterhammer may result in costly damages and even in some cases, loss of human lives. In light of this concept, different control devices that can protect the systems against waterhammer are introduced so that the great pressure differences are absorbed and the system is maintained undamaged. In this thesis, the main functions, the requirements for its construction and the different types of the surge tanks are explained. The governing differential equations defining the flow conditions of the surge tanks and their solutions are provided. In addition, for the use of design engineers a procedure to determine proper dimensions of a surge tank is developed. For the sake of dimensioning the surge tank effectively, empirical equations, which calculate the height of three different types of surge tanks with dimensionless parameters, are obtained. With the help of regression analysis, the correlation between the parameters of the developed equations are determined, and found to be relatively high. Finally, the economical aspect of a surge tank is discussed and comparison parameters are introduced to the designer.

Subject Keywords

Surge tanks., Water hammer., Hydraulic transients., Hydraulics.

URI

http://etd.lib.metu.edu.tr/upload/12615558/index.pdf
https://hdl.handle.net/11511/22363

Collections

Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

P. Berberoğlu, “Numerical investigation of effective surge tank dimensions in hydropower plants under various hydraulic conditions,” M.S. - Master of Science, Middle East Technical University, 2013.