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Piano Key Weir Head Discharge Relationships, Ricky M. Anderson
Piano Key Weir Head Discharge Relationships, Ricky M. Anderson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
A piano key (PK) weir is a type of nonlinear (labyrinth-type) weir developed specifically for free-surface flow control structures with relatively small spillway footprints. Currently, no generally accepted standard PK weir design procedure is available. This is due, in part, to the large number of geometric parameters and a limited understanding of their effects on discharge efficiency (discharge efficiency is quantified by the discharge coefficient of the standard weir equation). However, Hydrocoop, a non-profit French dam spillways association, has recommended a PK weir design and a head-discharge relationship specific to that geometry.
To develop a better understanding of the effects …