Browsing NTNU Open by Author "Viswanathan, Savin"
Now showing items 1-7 of 7
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Dynamic Simulation of a Mooring Catenary Based on the Lumped-Mass Approach: OpenModelica and Python Implementations
Viswanathan, Savin; Holden, Christian (Chapter, 2020)In this paper, the theoretical background behind the formulation and solution of a discretized lumped-mass mathematical-model of the physically continuous and inelastic mooring catenary is re-visited. The drag term of the ... -
Modelica Component Models for Non-diffracting Floating Objects and Quasi-static Catenary Moorings
Viswanathan, Savin; Holden, Christian (Chapter, 2020)In this paper, the theory behind determining the hydrodynamic response of a floating object in the presence of waves is discussed, followed by a simplification for the case of wave-transparent objects. The Morison equation ... -
Modelica Component Models for Oceanic Surface Waves and Depth Varying Current
Viswanathan, Savin; Holden, Christian (Chapter, 2020)In this paper, the theory of progressive ocean-surface gravity-waves is discussed, followed by the concept of the representation of the irregular sea-state by a sea spectrum. Fourier series decomposition of the irregular ... -
Multiphysical Simulation of Ocean Engineering Systems — Modelica Ocean Engineering Library — Cosimulation for Drilling Riser Analysis
Viswanathan, Savin (Doctoral theses at NTNU;2021:162, Doctoral thesis, 2021)The advancements in computing has made it possible to carry out integrated simulation of complex multiphysical systems, to better evaluate system performance and safety. The discipline of multiphysical simulation, though ... -
An Open-Source Python-Based Boundary-Element Method Code for the Three-Dimensional, Zero-Froude, Infinite-Depth, Water-Wave Diffraction-Radiation Problem
Viswanathan, Savin; Holden, Christian; Egeland, Olav; Greco, Marilena (Journal article; Peer reviewed, 2021)In this paper, a new open-source implementation of the lower-order, 3-D Boundary Element Method (BEM) of solution to the deep-water, zero Froude-number wave-body interaction problem is described. A validation case for ... -
Simulating the Dynamics of a Chain Suspended Sub-sea Load Using Modified Components from the Modelica MultiBody Library
Viswanathan, Savin; Holden, Christian (Chapter, 2020)In this paper, the philosophy of the lumped-mass approach is adopted in specifying components so as to enable the Modelica compiler to formulate equations governing the motion of a chain-suspended sub-sea load, subjected ... -
Towards the Development of an Ocean Engineering Library for OpenModelica
Viswanathan, Savin; Holden, Christian (Chapter, 2019)The development of component models to populate a proposed OpenModelica standard library for the ocean engineering domain is described through the process of modelling the response of catenary-moored wave-energy converters ...