Vol. 3 No. 2 (2025): Journal of Water Resources Management
Articles

Towards Safer Spillways: A Hybrid Approach To Flow Induced Vibration Analysis And Structural Integrity Assessment

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  • Nurul Husna Hassan,
  • Mohd Hafiz Zawawi,
  • Mohd Rashid Mohd Radzi,
  • Ahmad Zhafran Ahmad Mazlan,
  • Mohamad Aizat Abas,
  • Mohd Remy Rozainy Mohd Arif Zainol
Nurul Husna Hassan
Universiti Tenaga Nasional
Mohd Hafiz Zawawi
Department of Civil Engineering, Universiti Tenaga Nasional, Malaysia
Mohd Rashid Mohd Radzi
Hydro Life Extention Program (HLEP), TNB Power Generation Division, Malaysia
Ahmad Zhafran Ahmad Mazlan
School of Mechanical Engineering, Universiti Sains Malaysia, Malaysia
Mohamad Aizat Abas
School of Mechanical Engineering, Universiti Sains Malaysia, Malaysia
Mohd Remy Rozainy Mohd Arif Zainol
School of Civil Engineering, Universiti Sains Malaysia, Malaysia

Published 24-12-2025

Keywords

  • Spillway safety,
  • flow-induced vibration,
  • fluid-structure interaction,
  • numerical simulation,
  • experimental validation

How to Cite

Hassan, N. H., Zawawi, M. H., Mohd Radzi, M. R., Ahmad Mazlan, A. Z., Abas, M. A., & Mohd Arif Zainol, M. R. R. (2025). Towards Safer Spillways: A Hybrid Approach To Flow Induced Vibration Analysis And Structural Integrity Assessment. Journal of Water Resources Management, 3(2). Retrieved from https://journal.water.gov.my/index.php/jowrm/article/view/90

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Abstract

Spillways play a crucial role in regulating water discharge from dams, ensuring structural safety and mitigating flood risks. This study investigates the flow-induced vibrations and structural integrity of the Kenyir Dam chute spillway using a hybrid approach combining numerical simulations and experimental validation. A fluid-structure interaction (FSI) model was developed to analyze hydraulic and structural parameters, including velocity, pressure, stress, and deformation, under varying water levels. The findings reveal that higher water levels significantly increase flow velocity and pressure, leading to greater stress and deformation, though still within safe operational limits. Modal and harmonic response analyses identified critical mode shapes and natural frequencies, highlighting potential vibration risks. Experimental validation using a scaled hydraulic model confirmed the accuracy of the numerical predictions, with a maximum discrepancy of 14.01%. The results provide valuable insights into spillway safety management, supporting predictive maintenance strategies and the optimization of spillway designs to prevent structural failures.

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