A Hydraulic Analysis of Shock Wave Generation Mechanism on Flat Spillway Chutes through Physical Modeling
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...
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MDPI AG
2021-12-01
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| Series: | Hydrology |
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| Online Access: | https://www.mdpi.com/2306-5338/8/4/186 |
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| author | Muhammad Kaleem Sarwar Muhammad Atiq Ur Rehman Tariq Rashid Farooq Hafiz Kamran Jaleel Abbasi Faraz Ul Haq Ijaz Ahmad Muhammad Izhar Shah Anne. W. M. Ng Nitin Muttil |
| author_facet | Muhammad Kaleem Sarwar Muhammad Atiq Ur Rehman Tariq Rashid Farooq Hafiz Kamran Jaleel Abbasi Faraz Ul Haq Ijaz Ahmad Muhammad Izhar Shah Anne. W. M. Ng Nitin Muttil |
| author_sort | Muhammad Kaleem Sarwar |
| collection | DOAJ |
| description | 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°). |
| first_indexed | 2024-03-10T03:58:14Z |
| format | Article |
| id | doaj.art-1d9fb99d5ccd4f0f81089818b4458e13 |
| institution | Directory Open Access Journal |
| issn | 2306-5338 |
| language | English |
| last_indexed | 2024-03-10T03:58:14Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Hydrology |
| spelling | doaj.art-1d9fb99d5ccd4f0f81089818b4458e132023-11-23T08:39:49ZengMDPI AGHydrology2306-53382021-12-018418610.3390/hydrology8040186A Hydraulic Analysis of Shock Wave Generation Mechanism on Flat Spillway Chutes through Physical ModelingMuhammad Kaleem Sarwar0Muhammad Atiq Ur Rehman Tariq1Rashid Farooq2Hafiz Kamran Jaleel Abbasi3Faraz Ul Haq4Ijaz Ahmad5Muhammad Izhar Shah6Anne. W. M. Ng7Nitin Muttil8Centre of Excellence in Water Resources Engineering, University of Engineering and Technology, Lahore 54890, PakistanCollege of Engineering and Science, Victoria University, Melbourne 8001, AustraliaDepartment of Civil Engineering, International Islamic University, Islamabad 44000, PakistanCentre of Excellence in Water Resources Engineering, University of Engineering and Technology, Lahore 54890, PakistanCentre of Excellence in Water Resources Engineering, University of Engineering and Technology, Lahore 54890, PakistanCentre of Excellence in Water Resources Engineering, University of Engineering and Technology, Lahore 54890, PakistanDepartment of Civil Engineering, Abbottabad Campus, COMSATS University Islamabad, Abbottabad 22060, PakistanCollege of Engineering, IT & Environment, Charles Darwin University, Darwin 0810, AustraliaCollege of Engineering and Science, Victoria University, Melbourne 8001, AustraliaShock 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°).https://www.mdpi.com/2306-5338/8/4/186shock wavespillwayspillway pierflat chutephysical modeling |
| spellingShingle | Muhammad Kaleem Sarwar Muhammad Atiq Ur Rehman Tariq Rashid Farooq Hafiz Kamran Jaleel Abbasi Faraz Ul Haq Ijaz Ahmad Muhammad Izhar Shah Anne. W. M. Ng Nitin Muttil A Hydraulic Analysis of Shock Wave Generation Mechanism on Flat Spillway Chutes through Physical Modeling Hydrology shock wave spillway spillway pier flat chute physical modeling |
| title | A Hydraulic Analysis of Shock Wave Generation Mechanism on Flat Spillway Chutes through Physical Modeling |
| title_full | A Hydraulic Analysis of Shock Wave Generation Mechanism on Flat Spillway Chutes through Physical Modeling |
| title_fullStr | A Hydraulic Analysis of Shock Wave Generation Mechanism on Flat Spillway Chutes through Physical Modeling |
| title_full_unstemmed | A Hydraulic Analysis of Shock Wave Generation Mechanism on Flat Spillway Chutes through Physical Modeling |
| title_short | A Hydraulic Analysis of Shock Wave Generation Mechanism on Flat Spillway Chutes through Physical Modeling |
| title_sort | hydraulic analysis of shock wave generation mechanism on flat spillway chutes through physical modeling |
| topic | shock wave spillway spillway pier flat chute physical modeling |
| url | https://www.mdpi.com/2306-5338/8/4/186 |
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