Open AccessModel of discharge coefficient of crest gate rubber weir at fully closed condition
Author(s) -
Agus Wibowo,
Mohammad Bisri,
Sumiadi,
Very Dermawan
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/930/1/012026
Subject(s) - weir , discharge coefficient , crest , geotechnical engineering , natural rubber , sluice , flow (mathematics) , geology , engineering , materials science , mechanics , mechanical engineering , composite material , geography , physics , cartography , archaeology , quantum mechanics , nozzle
Crest Gate Rubber Weir is a modification of rubber weir with adding a metal plate or crest gate on the upstream side. The rubber in this weir functioning as a support while the crest gate serves on elevating water. Although many have been implemented, this weir’s discharge coefficient needs be researched considering its unique shape. This study looks for discharge coefficient to determine the discharge that passes through weirs at fully closed conditions. The research was conducted with a hydraulic model resembling part of Tirtonadi Weir in Surakarta with a hydraulic model. The model is made in an angle 53°, which represents the prototype at fully closed condition. Laboratory experiment shows that the discharge coefficient of this weir is greater than the Ogee Weir and Sluice Gate for the same height because of less flow resistance from this weir structural form.