Faculty Publications
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Item Hydroelastic analysis of VLFS integrated with multiple porous vertical barriers(Taylor and Francis Ltd., 2025) Hemanth, S.; Karmakar, D.The hydroelastic response of Very Large Floating Structures (VLFS) integrated with multiple porous vertical barriers of finite width is analyzed using small amplitude wave theory. The integrated system consists of a floating VLFS and porous barriers of finite-thickness designed to mitigate wave-induced structural effects. A coupled Multi-Domain Boundary Element Method (MDBEM) and Finite Difference Method (FDM) is employed, with MDBEM considered to model the fluid domain and barriers of finite thickness, while FDM is used to numerically model the VLFS. Numerical validation performed in the study confirms the accuracy of the results with the existing literature. The findings indicate that porous barriers effectively absorb wave impact, thereby reducing the forces exerted on the VLFS and minimizing the hydroelastic response, which enhances structural integrity and safety. The study also examines the influence of hydroelastic responses due to variation in barrier porosity, orientation, and placement of porous barriers. The study provides valuable insights which will be significant for optimizing VLFS design and improving resilience in maritime environments. © 2025 Informa UK Limited, trading as Taylor & Francis Group.Item Hydrodynamic analysis of floating VLFS using multi-domain boundary element method(Springer Nature, 2025) Hemanth, S.; Karmakar, D.The present study emphasizes the investigation of rigid and flexible Very Large Floating Structures (VLFS) by analyzing the reflection and transmission coefficients, plate deflections and wave force on the floating structure. The study involves analyzing the hydrodynamic characteristics of a porous and rigid VLFS, and hydroelastic analysis of flexible VLFS. The analysis is performed using the coupled Multi-Domain Boundary Element Method (MDBEM) and Finite Difference Method (FDM) at finite water depth. The flexible VLFS is modelled based on the Euler–Bernoulli thin plate theory and the study is performed using small amplitude wave theory. The study evaluates the hydroelastic behaviour in terms of structural deflection and hydrodynamic parameters by varying the structural porosity. The reflection and transmission coefficients are analyzed to show the extent of wave propagation on the lee side and the seaside of the structure. The wave force coefficients obtained signify the importance of the structure's orientation for the oncoming waves. The numerical results are validated with the results available in the literature. The analysis is performed for different structural and material properties to obtain the minimal hydroelastic and hydrodynamic response to assess the optimum design criteria and suitability of the type of VLFS, thereby maintaining the stability of the structure for safer operations. © The Author(s) 2025.Item Influence of seabed topography on hydroelastic behavior of VLFS integrated with porous breakwater(Elsevier Ltd, 2025) Hemanth, S.; Karmakar, D.The present study investigates the effect of seabed topography on the hydroelastic behaviour of a Very Large Floating Structure (VLFS) integrated with porous floating breakwaters for inclined, irregular, stepped and irregular stepped seabed conditions. The real-world marine environments feature complex topographies that significantly influence wave-structure interactions. The integrated system combines a flexible VLFS with porous floating breakwaters designed to attenuate wave energy and mitigate structural responses. A coupled Multi-Domain Boundary Element Method (MDBEM) for fluid dynamics and the Finite Difference Method (FDM) for structural analysis is employed for the computation, allowing for accurate modelling of wave-structure-seabed interactions. The numerical model developed for the MDBEM-FDM approach is validated against established benchmark results available in the literature. The key parameters, such as seabed slope, seabed irregularity, breakwater porosity, and placement, are analysed to evaluate their impact on hydrodynamic forces, bending moments, and strain distributions. The numerical results indicate that irregular seabed can amplify localized bending stresses by up to 30 % compared to flat beds, while inclined seabed alters wave reflection patterns, intensifying asymmetric loads. However, porous breakwaters effectively reduce transmitted wave energy by 40–50 %, suppressing adverse hydroelastic responses. The study emphasizes the importance of considering seabed topography while designing VLFSs integrated breakwater. The presence of the breakwater helps in the reduction of the stresses brought on by uneven seabed conditions by strategically placing them and optimizing their porosity. The findings from the present study can contribute to the development of resilient VLFS systems in real-world marine environments, ensuring structural integrity under varying seabed conditions. © 2025 Elsevier Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies.