Efficient approaches to reduce cavitation damage risk in the bottom outlet: Case study of Seymareh dam

Jamali Rovesht, Tohid; Manafpour, Mohammad

doi:10.22061/jcarme.2026.8583.2151

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	Efficient approaches to reduce cavitation damage risk in the bottom outlet: Case study of Seymareh dam
Journal of Computational & Applied Research in Mechanical Engineering (JCARME)
مقاله 3، دوره 15، شماره 1 - شماره پیاپی 29، مهر 2025، صفحه 39-50 اصل مقاله (1.3 M)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22061/jcarme.2026.8583.2151
نویسندگان
Tohid Jamali Rovesht¹؛ Mohammad Manafpour^* ²
¹Department of ArGEnCo, Research Group Hydraulics in Environmental and Civil Engineering (HECE), Liège University, Liège, Belgium.
²Department of Civil Engineering, Faculty of Engineering, Urmia University, Urmia, Iran.
تاریخ دریافت: 18 آبان 1400، تاریخ بازنگری: 03 اسفند 1404، تاریخ پذیرش: 03 اسفند 1404
چکیده
The occurrence of the cavitation phenomenon in hydraulic structures operating under high flow velocities remains a critical challenge. Efficient mitigation strategies may include increasing air concentration and optimizing the geometric design, such as minimizing sharp changes in flow direction and reducing local vortices. The Seymareh dam bottom outlet, operating under high water heads, is prone to cavitation due to its velocity and pressure fields. This study numerically investigates the effects of geometric modifications on cavitation risk reduction. Results showed that removing lateral expansion increases cavitation indices on outlet walls, while designing a concave curved bed elevates pressure and cavitation indices on the bed surface. Nonetheless, implementing both modifications together completely suppresses cavitation risk. The numerical analysis was conducted under single-phase flow conditions, without considering air entrainment, which, in practice, could further improve outlet safety. These findings could provide useful insights for geometric design approaches to control cavitation in high-velocity hydraulic structures.
کلیدواژه‌ها
Cavitation mitigation؛ Dam safety؛ Geometrical optimization؛ Numerical investigation؛ Flow3D

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Efficient approaches to reduce cavitation damage risk in the bottom outlet: Case study of Seymareh dam