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Proceedings Papers

Paper presented at the SNAME 25th Offshore Symposium, February 27, 2020
Paper Number: SNAME-TOS-2020-013
... than a specific object hydrodynamics. The authors have extended the 2D equations of motion presented in [4] into 3D, and further developed the in-house tool Dropped Objects Simulator (DROBS), which can be used to simulation the Motion Dynamics of Cylindrical Objects in three dimensions (3D) more...
Proceedings Papers

Paper presented at the SNAME 25th Offshore Symposium, February 27, 2020
Paper Number: SNAME-TOS-2020-014
... boundary condition froude number equation hydraulic jump artificial intelligence engineering liquified natural gas bem tank houston NUMERICAL SIMULATION OF FLUID SLOSHING IN A ROLLING TANK WEN-HUAI TSAO POSTDOCTORAL FELLOW, OCEAN ENGINEERING GROUP, DEPARTMENT OF CIVIL, ARCHITECTURAL...
Proceedings Papers

Paper presented at the SNAME 25th Offshore Symposium, February 27, 2020
Paper Number: SNAME-TOS-2020-025
... A newly developed method that solves the vorticity transport equation in the non-inertial frame of reference is proposed in this paper to simulate the flow past a rotating cylinder. It is a fully viscous method, in which the local phenomenon of vorticity is exploited. The spatial concentration...
Proceedings Papers

Paper presented at the SNAME 25th Offshore Symposium, February 27, 2020
Paper Number: SNAME-TOS-2020-026
... is interrogated to determine how much of the cell is filled. This provides a porosity level that is then used in the solution of the governing equations. This approach is very robust and addresses many of the challenges of the complex nature of offshore structures. However, there are issues in that sometimes...
Proceedings Papers

Paper presented at the SNAME 24th Offshore Symposium, February 20, 2019
Paper Number: SNAME-TOS-2019-017
... A spatially distributed Leading Edge Vortex (LEV) model is proposed in this paper to simulate the 3-dimensional boundary layer flow past a hydrofoil. It is a coupled viscous/inviscid method combining the Boundary Element Method (BEM) and the VIScous Vorticity Equation (VISVE) method...
Proceedings Papers

Paper presented at the SNAME 24th Offshore Symposium, February 20, 2019
Paper Number: SNAME-TOS-2019-019
... that the boundary layer growth is mainly in the chord-wise direction and simplified the three-dimensional boundary layer equations into two-dimensional. The three dimensional velocities, which is from the panel method, are used as the edge velocities, and the influence of boundary layers in other strips...
Proceedings Papers

Paper presented at the SNAME 22nd Offshore Symposium, February 2, 2017
Paper Number: SNAME-TOS-2017-012
... The flow around a riser can be modeled as the flow around a cylinder, which is an extensively studied problem within the field of fluid mechanics. In our previous work, VIScous Vorticity Equation (VISVE) method has been proposed and implemented by Tian [1], in order to model the effects...
Proceedings Papers

Paper presented at the SNAME 22nd Offshore Symposium, February 2, 2017
Paper Number: SNAME-TOS-2017-013
... relationship is selected to simulate the pipe's nonlinear material properties. An initial pipe ovality imperfection is also included in the FEM. The captured ultimate capacity from the FEA is compared with ultimate strength results calculated from equations of the two limit states given in API RP 1111, 2015...
Proceedings Papers

Paper presented at the SNAME 22nd Offshore Symposium, February 2, 2017
Paper Number: SNAME-TOS-2017-016
... factors, including the blade number, drag-to-lift ratio, advance ratio, thrust coefficient and tip speed ratio, are studied. This method is proved to be reliable and efficient in designing ducted propellers and tidal turbines. geometry nd offshore symposium lifting line model equation naval...
Proceedings Papers

Paper presented at the SNAME 22nd Offshore Symposium, February 2, 2017
Paper Number: SNAME-TOS-2017-024
... RP 2A-WSD 21st edition and ISO 19902:2007 1st edition have identical member code check equations when members are in axial compression with hydrostatic pressure. For members in axial tension with hydrostatic pressure, API RP 2A-WSD 21st edition code check equations provide a reasonably conservative...
Proceedings Papers

Paper presented at the SNAME 21st Offshore Symposium, February 16, 2016
Paper Number: SNAME-TOS-2016-007
..., is compared with that based on the classical Morison equation, as well as with experimental values reported in the API Manual. equation proceedings experiment houston reynolds cfd simulation reynolds number upstream oil & gas naval architect turbulence model morison simulation piv...
Proceedings Papers

Paper presented at the SNAME 21st Offshore Symposium, February 16, 2016
Paper Number: SNAME-TOS-2016-038
... of VIM of a deep draft semi-submersible. houston mesh proceedings coupling boundary condition texas texas section resolution knowledge management convergence equation turbulence model upstream oil & gas application validation simulation st offshore symposium naval architect...
Proceedings Papers

Paper presented at the SNAME 21st Offshore Symposium, February 16, 2016
Paper Number: SNAME-TOS-2016-042
... and the nonlinear equation of motion is then solved considering the large-amplitude rotations of the body. However, the option of using a consistent second order forcing model is also retained in the code where the linear diffraction forces and moments are augmented with the drift forces calculated from Newman...
Proceedings Papers

Paper presented at the SNAME 20th Offshore Symposium, February 17, 2015
Paper Number: SNAME-TOS-2015-012
... of the 3D Navier-Stokes equations towards a solution based on some simplified theory (or 2D solution in a larger domain) over some distance around the body. This resolves the problem of specifying boundary conditions on the reduced solution domain boundaries. In this way, damping of waves reflected from...
Proceedings Papers

Paper presented at the SNAME 19th Offshore Symposium, February 6, 2014
Paper Number: SNAME-TOS-2014-012
... symposium equation mooring system vortex mltsim naval architect amplitude vim fatigue analysis fatigue life proceedings fatigue damage subsea system fatigue analysis time history upstream oil & gas spar truss spar tension range texas texas section Proceedings of the 19th Offshore...
Proceedings Papers

Paper presented at the SNAME 17th Offshore Symposium, February 2, 2012
Paper Number: SNAME-TOS-2012-002
..., the optimal mooring system was composed of 12 chain-poly-chain lines anchored with suction piles. The total cost of the semisubmersible is estimated at $1.7 billion. safety mooring system buoyancy platform texas texas section deflection houston subsea system upstream oil & gas equation...
Proceedings Papers

Paper presented at the SNAME 17th Offshore Symposium, February 2, 2012
Paper Number: SNAME-TOS-2012-009
... equation, using the experimental determined values for the drag and inertial coefficients by Sarpkaya (1985). cylinder mesh k-omega sst reynolds texas texas section proceedings th offshore symposium sarpkaya morison equation simulation equation upstream oil & gas vortex pattern...
Proceedings Papers

Paper presented at the SNAME 17th Offshore Symposium, February 2, 2012
Paper Number: SNAME-TOS-2012-011
... the effects of viscous drag through a drag-to-lift ratio. The model is then extended to include higher order terms in the case of inviscid flow. The maximum efficiencies for both models are presented as a function of the turbine's tip speed ratio and the number of blades. houston equation control...
Proceedings Papers

Paper presented at the SNAME 16th Offshore Symposium, February 9, 2010
Paper Number: SNAME-TOS-2010-011
... upstream oil & gas subsea system geometry roll response free surface proceedings equation Proceedings of the 16th Offshore Symposium, February 9, 2010, Houston, Texas Texas Section of the Society of Naval Architects and Marine Engineers D-11 EFFECT OF BILGE KEEL GEOMETRIES ON ROLL RESPONSE...
Proceedings Papers

Paper presented at the SNAME 11th Offshore Symposium, February 20, 2002
Paper Number: SNAME-TOS-2002-004
... This paper is a study of application of Mathieu instability evaluations for Floating Production System (FPS) design in deepwater. The instability of the Mathieu’s equation with damping is investigated based on the infinite determinant and harmonic balance method. General stability charts...

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