TY - JOUR
T1 - A hydraulic analysis of shock wave generation mechanism on flat spillway chutes through physical modeling
AU - Sarwar, Muhammad Kaleem
AU - Tariq, Muhammad Atiq Ur Rehman
AU - Farooq, Rashid
AU - Abbasi, Hafiz Kamran Jaleel
AU - Haq, Faraz Ul
AU - Ahmad, Ijaz
AU - Shah, Muhammad Izhar
AU - Ng, Anne W.M.
AU - Muttil, Nitin
PY - 2021/12
Y1 - 2021/12
N2 - Shock waves are generated downstream of spillways during flood operations, which have adverse effects on spillway operations. This paper presents the physical model study of shock waves at the Mohmand Dam Spillway project, Pakistan. In this study, hydraulic analysis of shock waves was carried out to investigate its generation mechanism. Different experiments were performed to analyze the rooster tail on a flat spillway chute and to examine the factors affecting the characteristics of the rooster tail. The study results show that shock wave height is influenced by spillway chute slope, pier shape, and flow depth. Moreover, the height of the shock wave can be minimized by installing a semi-elliptical pier on the tail part of the main pier. Further modifications in the geometry of the extended tail part of the pier are recommended for the elimination of the shock wave. Based on observed data collected from the model study, an empirical equation was developed to estimate the shock wave height generated on the flat slope spillway chutes (5◦ to 10◦ ).
AB - Shock waves are generated downstream of spillways during flood operations, which have adverse effects on spillway operations. This paper presents the physical model study of shock waves at the Mohmand Dam Spillway project, Pakistan. In this study, hydraulic analysis of shock waves was carried out to investigate its generation mechanism. Different experiments were performed to analyze the rooster tail on a flat spillway chute and to examine the factors affecting the characteristics of the rooster tail. The study results show that shock wave height is influenced by spillway chute slope, pier shape, and flow depth. Moreover, the height of the shock wave can be minimized by installing a semi-elliptical pier on the tail part of the main pier. Further modifications in the geometry of the extended tail part of the pier are recommended for the elimination of the shock wave. Based on observed data collected from the model study, an empirical equation was developed to estimate the shock wave height generated on the flat slope spillway chutes (5◦ to 10◦ ).
KW - Flat chute
KW - Physical modeling
KW - Shock wave
KW - Spillway
KW - Spillway pier
UR - http://www.scopus.com/inward/record.url?scp=85121787060&partnerID=8YFLogxK
U2 - 10.3390/hydrology8040186
DO - 10.3390/hydrology8040186
M3 - Article
AN - SCOPUS:85121787060
SN - 2306-5338
VL - 8
SP - 1
EP - 13
JO - Hydrology
JF - Hydrology
IS - 4
M1 - 186
ER -