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Ocean Systems Engineering Volume 12, Number 4, December25 2022 , pages 385-402 DOI: https://doi.org/10.12989/ose.2022.12.4.385 |
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A finite element based approach to observe hydrodynamic pressure in reservoir adjacent to concrete gravity dam |
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Santosh Kumar Das, Kalyan Kumar Mandal and Arup Guha Niyogi
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| Abstract | ||
| This paper deals with the study of hydrodynamic pressure in reservoir adjacent to the concrete gravity dam subjected to dynamic excitation. Widely famous finite element method is used to discretize the reservoir domain for modelling purpose. Pressure is considered as nodal variable following Eulerian approach. A suitable nonreflecting boundary condition is applied at truncated face of reservoir to make the infinite reservoir to finite one for saving the computational cost. Thorough studies have been done on generation of hydrodynamic pressure in reservoir with variation of different geometrical properties. Velocity profile and hydrodynamic pressure are observed due to harmonic excitation for variation of inclination angle of dam reservoir interface. Effect of bottom slope angle and inclined length of reservoir bottom on hydrodynamic pressure coefficient of reservoir are also observed. There is significant increase in hydrodynamic pressure and distinct changes in velocity profile of reservoir are noticeable for change in inclination angle of dam reservoir interface. Change of bottom slope and inclined length of reservoir bottom are also governing factor for variation of hydrodynamic pressure in reservoir subjected to dynamic excitation. | ||
| Key Words | ||
| earthquake excitation; Eulerian approach; finite element; hydrodynamic pressure; infinite reservoir | ||
| Address | ||
| Santosh Kumar Das, Kalyan Kumar Mandal and Arup Guha Niyogi: Department of Civil Engineering, Jadavpur University, Kolkata-32, India | ||
