OrcaFlex user group material

Presentations from previous OrcaFlex UGM events are available for viewing in the table below. Click on the appropriate year to access a zip file which includes presentation slides and any relevant OrcaFlex files. There are also some links to relevant example files and tutorial videos where applicable.

UGM presentation downloads, by year

2018 | 2017 | 2016 | 2015 | 2014 | Pre-2014 

 

UGM presentation downloads, by topic

Automation

Topic
Details
Year
Materials
Python automation

More Python automation examples, including Post Calculation Actions.

2018
Python automation

When to use Python and illustrations in Pre-processing, Post-processing and Optimisation. Download the file ‘Python-automation-2013.zip’ from the link.

2013
Python automation

Illustration of how Python can be used for repetitive tasks such as selecting a wave packet containing the maximum expected wave. Download the file ‘Python-automation-2011.zip’ from the link.

2011
YAML automation

Using OrcaFlex Text Data Files for setting large amounts of data in pre-processing. Illustrated with a West Africa Environment. Download the file ‘YAML-automation-2011.zip’ from the link.

2011
Advanced automation

Introduction to Python and MATLAB interfaces. Download the file ‘Advanced-automation-2009.zip’ from the link.

2009

Lines

Topic
Details
Year
Materials
Line feeding

Examples of the line feeding feature in use, including cable lay along a curved path, a J-tube pull in operation and a payload lowering analysis.

2017
Line end orientation

Hints and Tips: How to correctly set line end orientations. See tutorial video.

2017
Introduction to line contact

Introduction to the line contact facility and guidance on its use. Download the file ‘Introduction-to-line-contact-2012.zip’ from the link.

2012
Line contact applications

A range of applications for the Line Contact facility. Download the file ‘Line-contact-applications-2012.zip’ from the link.

2012
Profiled hose

How to model a profiled composite hose structure. See example H01

2010
Response to slugs

Modelling slug flow along a jumper hose. See example A03

2010
Drilling riser flex joint

How to model a flex joint. See example B01

2009
Damping: hysteretic bend stiffness

Download the file ‘Hysteretic-bend-stiffness-2007.zip’ from the link. See also the paper ‘Time domain simulation of the 3D bending hysteresis behaviour of an unbonded flexible riser’ on the Resources page ‘Papers and Technical Notes’.

2007
Damping: Rayleigh

Correct application of frequency varying damping due to the line material. Download the file ‘Rayleigh-damping-2007.zip’ from the link.

2007

Robust runs

Topic
Details
Year
Materials
Line contact convergence

Common issues found in models that use line contact, and how to resolve them.

2018
Temporary supports

Hints and Tips: How to use supports to assist in getting the desired static solution.

2017
Statics convergence

Hints and Tips: Sparse matrix, lay azimuth and Euler warnings.

2017
Frequency domain

Analysis in the frequency domain using an example of an SCR system. Comparison with time domain and guidance on when it is appropriate to use frequency domain.

2015
Convergence hints and tips

Examples of issues that can cause convergence problems in statics or dynamics, and tips on how to avoid them.

2014
Statics

See the technical note ‘Static Convergence Guide’ on the Resources page ‘Papers and Technical Notes‘.

2008
Time integration schemes: implicit

Update on Implicit timestep algorithms and guidance. Download the file ‘Implicit-integration-2007.zip’ from the link.

2007
Time integration schemes

Introduction and guidance on timestep algorithms. Compares Explicit and Implicit (variable). Note runtimes superseded and Implicit (fixed) now default. Download the file ‘Time-integration-schemes-2006.zip’ from the link.

2006
Discretisation and convergence

See the technical note ‘Static Convergence Guide’ on the Resources page ‘Papers and Technical Notes‘.

2005

Seabed

Topic
Details
Year
Materials
Spanning

Worked Examples: Advice on modelling structures that span profiled or 3D seabeds. Includes friction and multiple solutions. Download file ‘Spanning-2011.zip’ at the link.

2011
Seabed stability

On-bottom stability overview and how to apply seabed clearance by varying drag and lift. Download the file ‘Seabed-stability-2006.zip’ at the link.

2006

Vessels

Topic
Details
Year
Materials
Heave-roll coupling

Worked Examples: Explains why translations, such as heave, can change amplitude when wave direction is reversed. Download the file ‘Heave-roll-coupling-2013.zip’ from the link.

2013
Load RAOs in regular waves

Worked Examples: Explains how to get a settled response. Download the file ‘Load-RAOs-in-a-regular-wave-2013.zip’ from the link.

2013
Vessels: handling data

Review of functions and showing data import. Download the file ‘Handling-vessel-data-2010.zip’ from the link.

2010
Rotating turret

How to model a rotating turret. See example C03

2009
Vessel motions

Importing and checking vessel data. Download file ‘Vessel-motions-2006.zip’ from the link.

2006

Stress and fatigue

Topic
Details
Year
Materials
Fatigue analysis

Methods, load case selection, setting fatigue data.

2016
Stress calculations

How to get stress results for homogeneous and composite structures. Explanation of linear and non-linear facilities. Download the file ‘Stress-calculations-2010.zip’ from the link.

2010
Fatigue case studies

How non-linear soils and hysteretic bending affect fatigue damage. Download the file ‘Fatigue-case-studies-2009.zip’ from the link.

2009

Buoys

Topic
Details
Year
Materials
Spinning buoy

Hints and tips: how to stop a 6D buoy spinning.

2017
Wings

Overview of buoy wings and how to apply them correctly. Download the file ‘Wings-2005.zip’ from the link.

2005
Buoy hydrodynamics

Guidance on setting parameters. See examples F01 & F07.

2009
Spar OD vs wavelength

See the technical note ‘Spar Buoys Short Wave Issue‘ on the Resources page ‘Papers and Technical Notes‘.

2008

Operations

Topic
Details
Year
Materials
Pipelay modelling with supports

Simple pipelay examples, using the ‘supports’ feature to model the stinger. See also example set E: Pipelay and Recovery

2014
Lowering

Including trapped water, slamming, operations in vessel lee. See example F01.

2013
Jacket launch

See 2016 UGM constraints presentation for jacket launch example.

2009
Crane motion

See 2016 UGM constraints presentation for crane motion example.

2009
Pipelay

See Operational Example Set E: Pipelay and Recovery.

2008
Spoolpiece manoeuvring

Illustration of prebend and lowering. See example F06.

2008

Structures

Topic
Details
Year
Materials
Fenders

Modelling options for Fender structures: see example C09

2011
Mid water arches

Guidance for mid water arch modelling: see example A02

2011
Compressible buoyancy bags

Worked Examples: How to model compressible buoyancy bags with a non-linear bulk modulus. Download file ‘Compressible-buoyancy-bags-2010.zip’ in link.

2010
J-tube modelling

See riser installation example D04.

2010
Modelling chutes

See riser installation example D04.

2010
Active heave compensation

See payload handling example F03.

2008
Passive heave compensation

See payload handling example F02.

2008

Others

Topic
Details
Year
Materials
Data input productivity

Hints and tips: OrcaFlex tools to help with efficient data input.

2017
Constraints

Using the Constraint object in a variety of applications to limit or control individual degrees of freedom. Examples include a jacket launch, stinger roller boxes and a crane operation.

2016
Modelling contact

Overview of the different contact models available in OrcaFlex, and guidance on how to use the correct one for your application.

2015
Supports: alternative applications

Using the OrcaFlex supports feature for applications other than pipelay.

2014
BSR design

Worked Examples: Generating BSR Design Loads. Download the file ‘BSR-design-2011.zip’ from the link.

2011
Extreme Value Statistics

Overview of the results, guidance on use and illustrated with a typical analysis. Download the file ‘Extreme-value-statistics-2010.zip’ from the link.

2010
VIV Tools

Overview of Vortex Induced Vibration (VIV), OrcaFlex tools and interfaces to VIVA and Shear7. Download the file ‘VIV-2005.zip’ from the link

2005