TYPE – U SPILLWAY : NUMERICAL STUDY OF THE CAPACITY AND DESIGN OPTIMIZATION

• Main Author: Nur Wahid, Ahmad
• Format: Theses
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/63110
• Institution: Institut Teknologi Bandung

Holding a very large quantity of water in a dam can cause the dam to collapse due to flood waves, which is a life-threatening disaster. Dam safety can be avoided by building a spillway. The overflow here can be analogous to the safety valve of the reservoir system. Various engineering has been carried out to increase the capacity of a spillway. The parameter that most influences the capacity of a spillway is the crest length of the spillway. Numerical simulation is an alternative that gives good results in engineering to perform a flow behavior analysis. The u-type spillway is an engineered form of a spillway. The analysis was carried out using a numerical simulation model. The u-type spillway provides a significant increase in spillover capacity compared to ordinary thresholds. Modification of the discharge equation that passes through the spillway needs to be done to provide good performance against the geometric changes that occur. The changes made to the equation of the discharge passing through the spillway are ????=????.????????????(????????????+????????????)?????????????????.?????????????????????.???????????? with a coefficient of conformity (????????) = 0.98. Considering the effectiveness of the spillway geometry, it is necessary to satisfy the conditions for ?????????????.???? , ????????????????<????????×???????? or with ????????????????????????????????????<????????????????????????????????????????????.