Closure to “parapet wall effect on piano key weir efficiency” by o. machiels, s. erpicum, p. archambeau, b. dewals, and m. pirotton parapet wall effect on piano key weir efficiency closure to “parapet wall effect on piano key weir efficiency” by o. machiels, s. erpicum, p. archambeau, b. dewals, and m. pirotton. While the higher efficiency of the piano key weir compared to standard linear weirs has already been demonstrated, its optimal geometry is still poorly defined. in order to improve the design of the complex geometry of this structure, the use of parapet walls has been tested. they consist of vertical extensions placed over the weir crest.. Reference : closure to “parapet wall effect on piano key weir efficiency” closure to “parapet wall effect on piano key weir efficiency”.
Piano key weir spillway standard design principles and flow induced vibrations the piano key weir is a non-linear overflow structure which causes complex flow outlet key parapet wall height .. Anderson, ricky m., "piano key weir head discharge relationships" (2011).all graduate theses and dissertations. 880. a piano key (pk) weir is a type of nonlinear (labyrinth-type) weir developed raising the crest elevation via a parapet wall; fillets underneath the upstream overhangs; iv. The concept of the piano key weir (pkw) is a further development of the labyrinth weir (tul- exist regarding the relative effect on the rating curve. the main parameters having a significant tive height of the parapet walls. labyrinth and piano key weirs ii pkw 2013 crc press, boca raton..
