Browsing NTNU Open by Author "Bihs, Hans"
Now showing items 81-100 of 132
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A non-linear implicit approach for modelling the dynamics of porous tensile structures interacting with fluids
Martin, Tobias; Bihs, Hans (Peer reviewed; Journal article, 2021)A new model for the simulation of large motions of porous tensile structures and their interaction with the surrounding fluid is developed in this paper. The discrete structure is represented by several non-linear elastic ... -
Numerical and experimental investigation of floating structures in regular waves
Dempwolff, Leon-Carlos; Martin, Tobias; Kamath, Arun; Bihs, Hans (Chapter, 2019)In this paper, an experimental and numerical study of a floating object is presented. The incorporation of both experimental and numerical tools for the investigation of a simple floating object provides the opportunity ... -
A numerical framework for modelling the dynamics of open ocean aquaculture structures in viscous fluids
Martin, Tobias; Tsarau, Andrei; Bihs, Hans (Peer reviewed; Journal article, 2020)This paper presents a complete numerical framework for modelling open ocean aquaculture structures in waves and current using Computational Fluid Dynamics (CFD). A structural dynamics model is incorporated to account for ... -
Numerical Investigation of Focused Waves and their Interaction with a Vertical Cylinder using REEF3D
Bihs, Hans; Alagan Chella, Mayilvahanan; Kamath, Arun; Arntsen, Øivind Asgeir (Journal article; Peer reviewed, 2017)For the stability of offshore structures, such as offshore wind foundations, extreme wave conditions need to be taken into account. Waves from extreme events are critical from the design perspective. In a numerical wave ... -
Numerical Investigation of Irregular Breaking Waves for Extreme Wave Spectra Using CFD
Aggarwal, Ankit; Alagan Chella, Mayilvahanan; Bihs, Hans; Pakozdi, Csaba; Berthelsen, Petter Andreas; Arntsen, Øivind Asgeir (Chapter, 2017)Offshore structures are exposed to irregular sea states. It consists of breaking and non-breaking waves. They experience breaking wave loads perpetually after being installed in the open ocean. Thus, the study of wave ... -
Numerical Investigation of Sloshing under Roll Excitation at Shallow Liquid Depths and the Effect of Baffles
Kamath, Arun; Grotle, Erlend Liavåg; Bihs, Hans (Peer reviewed; Journal article, 2021)Sloshing is relevant in several applications like ship tanks, space and automotive industry and seiching in harbours. Due to the relationship between ship and sloshing motions and possibility of structural damage, it is ... -
Numerical investigation on scour around a cylinder and stabilities of scour protections
Jorde, Lars Ottar (Master thesis, 2022)En tredimensjonal numerisk modell brukes til å undersøke lokal erosjon rundt en sylinder i en rektangulær kanal under strøm. Numerisk modellering av erosjon rundt en sylinder er utfordrende fordi beregningene krever at man ... -
Numerical Investigation on Wave-Overtopping at a Double-Dike Defence Structure in Response to Climate Change-Induced Sea Level Rise
Jin, Yueyuan; Wang, Weizhi; Kamath, Arun; Bihs, Hans (Journal article; Peer reviewed, 2022) -
Numerical Investigations of the Hydrodynamics of an Oscillating Water Column Device
Kamath, Arun; Bihs, Hans; Arntsen, Øivind Asgeir (Journal article; Peer reviewed, 2015)An oscillating water column (OWC) device is a renewable energy device that is used to extract ocean wave energy through the action of waves on a partially submerged chamber consisting of an air and a water column. The ... -
Numerical Modeling of Power Take-Off Damping in an Oscillating Water Column Device
Kamath, Arun; Bihs, Hans; Arntsen, Øivind Asgeir (Journal article; Peer reviewed, 2015)An Oscillating Water Column (OWC) is a wave energy converter consisting of a partially submerged chamber with an air column over the water column. The work done by the air column under excitation by the incident waves is ... -
Numerical Modeling of the Interaction of Moving Fish Nets and Fluid
Martin, Tobias; Wang, Gang; Bihs, Hans (Peer reviewed; Journal article, 2022)The significant difference in length scales between the flow around a moving fish net and the flow around each twine of the net prevents the resolution of the complete structure within a discrete fluid domain. In this ... -
Numerical Modelling for Fluid-Structure Interaction of Aquaculture Collar Structures using a Beam Model
Lim, Sungsoo (Master thesis, 2019)I denne oppgaven brukes en 3-dimensjonal strålemodell for fiske merd strukturen, og Newmark-metoden er vedtatt for tidintegrasjon av strukturell dynamisk analyse. For å verifisere og validere strukturløsningen utviklet i ... -
Numerical Modelling of an Innovative Conical Pile Head Breakwater
Sathyanarayana, Arunakumar Hunasanahally; Suvarna, Praveen S.; Umesh, Pruthviraj; Shirlal, Kiran G.; Bihs, Hans; Kamath, Arun (Peer reviewed; Journal article, 2022)When moderate wave activity at the shoreline is acceptable, pile breakwaters can serve as an alternative to conventional breakwaters. Increasing the size of the pile breakwater in the vicinity of the free surface increases ... -
Numerical Modelling of Arctic Coastal Erosion Due to Breaking Waves Impact Using REEF3D
Ahmad, Nadeem; Bihs, Hans; Alagan Chella, Mayilvahanan; Arntsen, Øivind Asgeir; Aggarwal, Ankit (Chapter, 2017)In the present study, numerical modelling breaking waves over a slope and the resulting erosion in the arctic region is presented. The study is performed with the open-source computational fluid dynamics (CFD) model REEF3D. ... -
Numerical Modelling of Irregular waves and Irregular Wave Forces with REEF3D
Aggarwal, Ankit (Master thesis, 2015)In this study, the irregular wave generation using the numerical model REEF3D is tested and validated. The testing for the empty wave tank is done in order to test the irregular wave generation and the propagation. The ... -
Numerical Modelling of Scour Around an Offshore Jacket Structure Using REEF3D
Ahmad, Nadeem; Bihs, Hans; Kamath, Arun; Arntsen, Øivind Asgeir (Lecture Notes in Civil Engineering;LNCE, volume 22, Chapter, 2019)In the present paper, a numerical investigation of the scouring around offshore jacket structure is carried out. The open-source CFD model REEF3D is used for the numerical modelling. The model solves the Reynolds-averaged ... -
Numerical modelling of the interaction between a fish net and fluid using CFD
Martin, Tobias; Kamath, Arun; Bihs, Hans (Chapter, 2019)A numerical model for the determination of the deformed shape of nets under consideration of hydrodynamic loads and elastic twines is presented. The hydrodynamic forces are incorporated using Morison's formula and force ... -
Numerical Modelling Of The Interaction Of Moving Fish Nets And Fluid
Martin, Tobias; Bihs, Hans; Wang, Gang (Chapter, 2020)The significant difference in length scales between the flow around a moving fish net and the flow around each twine of the net prevents the resolution of the complete structure within a discrete fluid domain. In this ... -
Numerical Modelling of Wave Overtopping Response to Sea Level Rise with REEF3D::SFLOW
Jin, Yueyuan (Master thesis, 2020)Klimaendringer har vært et hovedtema på forskningsområdet nylig fordi det påvirker menneskets livsmiljø. I kystsonen og lavtliggende området forårsaker klimaendringer havnivåstigning, noe som medfører potensiell fare for ... -
Numerical simulation and analysis of phase focused breaking and non-breaking wave impact on fixed offshore platform deck
Moideen, Rameeza; Behera, Manas; Kamath, Arun; Bihs, Hans (Peer reviewed; Journal article, 2020)Extreme wave impact due to tsunamis and storm surge create large wave heights that cause destruction to coastal and offshore structures. Focused waves have been used to represent such extreme waves, and in the present ...