TPN is a research laboratory specialized in linking academic knowledge and ships and offshore industry needs. Numerical and experimental work developed by over 40 people and spin-off companies in: •Model testing. •Ships and offshore hydrodynamics and stability. •Risers and mooring. •Manoeuvring and DP. •Offshore operations and installations. •Development of in-house analysis software. •3D visualization. •Simulations.

1. Numerical Offshore Tank
TPN
November | 2011

2. Introduction
•TPN is a research laboratory specialized in linking academic knowledge and
ships and offshore industry needs.
•Numerical and experimental work developed by over 40 people and spin-off
companies in:
•Model testing.
•Ships and offshore hydrodynamics and stability.
•Risers and mooring.
•Manoeuvring and DP.
•Offshore operations and installations.
•Development of in-house analysis software.
•3D visualization.
•Simulations.

3. Infrastructure
Facilities Hydrodynamic Calibrator (CH)
Cluster 1: 192 blades with 192x8 cores and 15 TFlops 4D Visualization Room
Cluster 2: 16 servers GPU with 30 TFlops

4. Hydrodynamic
Calibrator – Wave
Basin

5. CH-TPN
Wave Basin – Objective
•Hydrodynamic Calibrator.
•Hybrid investigation model (numerical/experimental).
•Research on wave generation and absorption.
Wave Basin – Description
•Dimensions: 14 x 14 meters and 4.1 meters depth.
•148 flap type wave boards distributed in 4 sides.
•Maximum wave height of 0.4 meter.
•Wave frequency range of 0.5 to 2.0 Hz.
•Designed to generate regular, irregular and transient
waves.
•Active absorption up to 93% for regular waves.
•Generation and absortion performed by the 4 basin sides

6. CH-TPN
Instrumentation
•Carriage for instrumentation and dynamic •16 capacitives and 148 ultrasonic wave
actuators support probes attached to the flaps
•Qualisys optical system to capture model motions
•4 cameras In-air and 3 underwater

7. CH-TPN
Ships and Oil Platform Models
1 2
•Model in scale may be constructed in IPT (State of
São Paulo Research Institute)
3 4

8. Research Topics

9. TPN Numerical Simulator
•In-house code for analysis of offshore
systems.
•Framework for different tools
•Ex: Wamit, FEM-ANFLEX, FEM-
Preadyn etc.
•Integrates hydrodynamic, mooring and
riser, VIV, VIM and DP analysis.
•Calibration with experimental results
from the Hydrodynamic Calibrator.
•Simulation of multibody and real scale
structures.

10. TPN Real Time Simulator
•Adapted from the original TPN software.
•Allows real time simulations of inland and
offshore systems.
•Together with graphical user interface
produces virtual reality training consoles.

11. Visualization of Results
•Post-processing of results calculated in TPN softwares.
•3D and virtual reality – TPNView – In-house software.

12. Runup/Air Gap
Wave Run-up Effects on Semi-Sub Columns
•Fundamental model tests.
•Numerical evaluation of the phenomena
•Potential Theory – WAMIT.
•Viscous Theory – CFD ComFLOW.
•Definition of a Design Methodology Procedure.

13. Ship resistance using RANSE
and VOF approach
VOF - Fraction model – StarCCM+
• NPL Series Hull.
• Coupled viscous and potential effects.
Simulation conditions
• High speed vessel – Fn=0.4.
• Model scale - Reynolds 106.
• Fixed – no trim or sinkage.

14. Moving-Particle Semi-implicit (MPS)
• In-house development.
• Free surface. Oil leakage
• Complex geometry. Dam breaking (MPS method)
• Multibodies.
• Large displacements.
• Large deformations.
• Moving boundaries.
• Fragmentation and merging.
• Multiphase and Multiphysics. Water flooding
• Propellers.
Flow in porous media

15. Propeller using panel method
• Comparison between numerical and regression results.
• Potential flow.
• Viscous corrections.
• Lifting line code – in-house.
• Lifting surface code – in-house.
• PPB-HSVA.

16. 2D/3D Time domain BEM
for seakeeping Analysis
• In house development.
• Calculation hydrodynamic coefficients and motions in surface waves.
2D 3D

17. Numerical wave tank simulator
of CH-TPN
•CH Numerical Simulator.
•148 Numerical Flaps.
•Time-Domain Boundary Elements
Method.
•Allows to test the algorithms
developed for wave generation and
active absorption.

18. Vortex-Induced Vibrations
•Fluid-structure interaction.
•Development of CFD code together with
MARIN - ReFRESCO.
•VIV of risers with CFD.
•Semi-empirical model – TPN software.

19. Vortex-Induced Motions
• The motivation is the low aspect ratio
of offshore platforms, as spar and
L
monocolumns.
• Combined experimental and
numerical approaches for
understanding and prediction of VIM. D
• Numerical model implemented in
TPN software.
Numerical Experiments
2 1.6
L/ D= 2.00
1.8 L/ D= 1.50
1.4
L/D = 0.10 L/ D= 1.00
1.6
L/D = 0.20 L/ D= 0.75
L/D = 0.30
1.2
1.4 L/ D= 0.50
L/D = 0.40 L/ D= 0.40
1.2 1
L/D = 0.50 L/ D= 0.30
A /D
Ay / ( D)
L/D = 0.75 1
Y
L/D = 1.00 0.8
L/D = 1.50 0.8
Gonçalves et al. (2010) 0.6 0.6
L/D = 0.21
Gonçalves et al. (2010) 0.4
L/D = 0.39 0.4
0.2
0 0.2
0 2 4 6 8 10 12 14 16
Vr = UT / D
0 0 0
0 2 4 6 8 10 12 14
Reduced Velocity (Vr)

20. Conceptual Designs

21. Dry Tree Completion
FPSO-TLWP Coupled System
• Design of the Mooring and Tendons
systems.
• Design of the TLWP.
• Supervise the model tests performed
at NMRI (Japan).
• Hydrodynamic (shadow and 2nd order
effects).
• Stability analysis .
• Structural analysis.

22. MonoGoM – BR America
• Design of a Monocolumn hull with an optimized
Hydrodynamic behavior in waves.
• Capacity to hold rigid risers.
• Design of Mooring and Risers for Hurricane Conditions
of the Gulf of Mexico.
• Clashing Analysis.

23. Analyses and
Simulations

24. Parametric Seakeeping Analysis
MPSO Design: Wave Exciting Forces and Numerical Experimental
Moments
•27 different model geometries.
•Monitouring of Wave exciting forces and
moments.
•Numerical X Experimental Comparison.

25. VIM –MonoGoM Platform 1 2
IPT (Brazil)
• Tests at different basins (IPT-Brazil and
3 4 3 3
NMRI-Japan) and with different SE
incidence
NW
incidence
setups. Y
U
2 Y 1
U
• Evaluate MonoGoM concept in terms X X
Mooring Line
of VIM. Mooring Line 4 4
• Different responses due to:
– Basin dimensions.
– Model scale. NMRI (Japan)
– Springs setup. CCD camera
– Reynolds number. Spring
90
1
120
2
60
180 degree 0 degree
incidence incidence
1.5 Spring
3 Y
150 1 30
U U
X Spring
0.5
Wire
Mooring Line MPSO
180 0
2
210 330
240 300
270

26. VIM on Semi-Sub
• VIM model tests performed at IPT
towing tank.
• Reduced scale 1:100.
• 8 different headings (0 up to 180
degrees).
• 6 degrees-of-freedom measured
using optical system.
• Forces measurements in mooring
lines.
• The main effects studied:
– Hull appendages.
– External damping.
– Draft condition.
– Concomitant presence of waves and
currents.

27. Offloading FPSO Polvo
• Risk Analyses about a possible of collision
during the offloading operation, between
FPSO POLVO and a jack-up located at 1706
meters of distance.
• The FPSO POLVO is equipped in a Turret
configuration.
• The offloading system is composed by a
shuttle SUEZMAX tanker and a tug boat.

28. DP – BGL1 – P55
•Comparison between the BR rules and
TPN analysis to installation of a
manifold.
•Orange curve = BR rule.
•Green curve = TPN prediction of
operational window.

29. Y subsea launching method
• Two vessels support the equipment to TPN Numerical Model
be launched.
• The relative positions and cable length
can be controlled.
• TPN analyses:
• Damping coefficients evaluation
• Model Tests.
Model Test in CH-TPN
• Motion imposed in the
launching cable.
• Numerical model calibration. 5 cm
5 cm
• Evaluation of the cable tension and manifold
position in the TPN.

30. SWATH
• Seakeeping evaluation.
• Comparison between a Slice
and a Swath hull concerning
motions and accelerations.
• Sickness evaluation

31. Regasefication Terminal BA
• Design of Mooring and fenders system.
• Hydrodynamic (shadow, shallow water and 2nd order effects).
• 3D movies and animations.

32. Stability Analysis
• Activities:
• Modeling of vessels in CAD software.
• SSTAB – Stability Analysis Software.
• Intact and damage stability analysis.

33. Ship Interaction
Forces involved in a moored and passing ship interaction.
Simulação calado 0.186m, distância 0.86m, velocidade 0.594 m/s
0.08
Método de faixas
Rankine - 3D
0.06 Ensaio - sinal original
0.04
Fx/(0.5  L T V 2)
0.02
0
-0.02
-0.04
-0.06
-2 -1.5 -1 -0.5 0 0.5 1 1.5 2
x/L
Simulação calado 0.186m, distância 0.43m, velocidade 0.594 m/s
0.2
Método de faixas
Rankine - 3D
0.15 Ensaio - sinal original 0
-0.1
-0.2
0.1
2.5
Fy/(0.5  L T V 2)
2
0.05
1.5
0
1
0.5
-0.05
0
-0.1
-0.5
3.5
3
-1 2.5
2
-0.15 1.5
-2 -1.5 -1 -0.5 0 0.5 1 1.5 2 0.5
1
x/L -1.5
-0.5
0
-1
-1.5

34. Inner water navigation
• Development of a simulator for training towboats captains.
• Reproducing critical points of the river like bridge crossing, shallow or narrow
passages as well as hard curves.
• The dynamic of the fleet of barges plus the towboat was solved applying the TPN
software, adapted to a real time inputs and solution .
• The hydro and aerodynamic coefficients were obtained using CFD and validated by
experimental data.
• The simulator reproduced the interior of a towboat.

35. Moatize
• Verify the interference between ships.
• Size the height of the cranes.
• Verify the boom interference between the Panamax and Capesize.
35

36. Torpedo Pile
• Torpedo pile monitoring system: analysis and improvement.
• Hardware evaluation (MEMS based inertial measurement sensors).
• Data treatment.
• Trajectory reconstruction algorithms.

37. Thank You