Blar i NTNU Open på forfatter "Bihs, Hans"
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Simulation of floating bodies using a combined immersed boundary with the level set method in REEF3D
Bihs, Hans; Kamath, Arun; Lu, Jiayi Zheng; Arntsen, Øivind Asgeir (Chapter, 2017)The 6DOF algorithm implemented in the open-source computational fluid dynamics (CFD) model REEF3D is used to simulate a horizontal cylinder in heave motion around the free surface and the motion of a freely floating ... -
Simulation of freely-floating bodies in waves using a 6dof algorithm
Lu, Jiayi Zheng; Kamath, Arun; Bihs, Hans (Chapter, 2017)Interactions between floating bodies and waves are found in several engineering applications like oil platforms or floating breakwaters. Floating bodies are strongly influenced by the free surface and the fluid structure ... -
Study of water impact and entry of a free falling wedge using computational fluid dynamics simulations
Kamath, Arun; Bihs, Hans; Arntsen, Øivind Asgeir (Journal article; Peer reviewed, 2017)Many offshore constructions and operations involve water impact problems such as water slamming onto a structure or free fall of objects with subsequent water entry and emergence. Wave slamming on semisubmersibles, vertical ... -
Submerged Floating Tunnel: Water-Structure Interaction
Popov, Daniil (Master thesis, 2019)Denne studien fokuserer på interaksjonen mellom vann og et nedsenket flytende rør i homogene og lagdelte strømmer, samt utvikling av formet av tyngdekraften. Det siste ble gjort for å sette opp og validere numerisk modell ... -
Three-dimensional CFD modeling of wave scour around side-by-side and triangular arrangement of piles with REEF3D
Ahmad, Nadeem; Bihs, Hans; Kamath, Arun; Arntsen, Øivind Asgeir (Journal article; Peer reviewed, 2015)Sediment transport and resulting local scour in marine and coastal environments can lead to the failure of structures. The knowledge and understanding of erosion and sediment transport mechanisms and the correct prediction ... -
Three-dimensional numerical modeling of local scour around a non-slender cylinder under varying wave conditions
Ahmad, Nadeem; Afzal, Mohammad Saud; Bihs, Hans; Arntsen, Øivind Asgeir (Chapter, 2015)The three-dimensional numerical model REEF3D is used to simulate the detailed flow field and sediment transport around a non-slender cylinder under regular waves. The location of the free surface is calculated with the ... -
Three-Dimensional Numerical Modeling of Local Scouring in Open Channel Flow
Bihs, Hans (Doktoravhandlinger ved NTNU, 1503-8181; 2011:127, Doctoral thesis, 2011)In the present study the three-dimensional numerical model SSIIM is used to investigate local scouring in open channel flow. Based on an implicit finite-volume scheme, the transient Reynolds-averaged Navier-Stokes equations ... -
Three-dimensional numerical modelling of wave-induced scour around piles in a side-by-side arrangement
Ahmad, Nadeem; Bihs, Hans; Myrhaug, Dag; Kamath, Arun; Arntsen, Øivind Asgeir (Journal article; Peer reviewed, 2018)The paper presents the numerical modelling of wave-induced scour around piles in a side-by-side arrangement using the open-source CFD model REEF3D. The model solves the Reynolds-Averaged Navier-Stokes equations to calculate ... -
Three-dimensional numerical modelling of wave-induced scour around piles in a side-by-side arrangement
Ahmad, Nadeem; Bihs, Hans; Myrhaug, Dag; Kamath, Arun; Arntsen, Øivind Asgeir (Journal article; Peer reviewed, 2018) -
Upstream-Cylinder and Downstream-Cylinder Influence on the Hydrodynamics of a Four-Cylinder Group
Kamath, Arun; Bihs, Hans; Alagan Chella, Mayilvahanan; Arntsen, Øivind Asgeir (Journal article; Peer reviewed, 2016)The wave interaction at low Keulegan-Carpenter numbers with a group of four large cylinders arranged in the form of a square with one diagonal along the direction of wave propagation is studied with a focus on the ... -
Validation of a Numerical Model for the Investigation of Tension Leg Platforms With Marine Energy Application Using REEF3D
Windt, Christian; Goseberg, Nils; Martin, Tobias; Bihs, Hans (Chapter, 2021)Exploiting the offshore wind resources using floating offshore wind systems at sites with deep water depths requires advanced knowledge of the system behaviour, including the hydro-, areo-, and mooring dynamics. To that ... -
Wave environment assessment at a Norwegian harbor for land-based aquaculture facilities using a combined numerical approach
Reidulff, Knut (Master thesis, 2021)Numerical wave modeling of Norwegian coastal areas is challenging due to the strongly varying bathymetry, irregular coastline, and large domains of interest. Phase-averaged models provide an appealing solution due to their ...