The new features introduced in OrcaFlex 11.1 can be viewed online in the OrcaFlex help file. We would like to thank BP, the Norwegian Deepwater Programme, the DeepStar Project and Southampton University for access to the VIV measurements used in these comparison studies.The latest release of OrcaFlex 11.1 is OrcaFlex 11.1d. R648#04#02 OrcaFlex VIV Comparison with Deepstar Seneca Trials reports comparisons against measurements from DeepStar project experiments on Lake Seneca.R648#03#02 OrcaFlex VIV Comparison with Schiehallion Results reports comparisons against measurements of a real full-scale drilling riser in the Schiehallion field.R648#02#02 OrcaFlex VIV Comparison with Delft Model Tests reports comparisons against measurements made at model tank tests in the large flume at the Delft Hydraulics Laboratory.R648#01#02 OrcaFlex VIV Validation Summary gives an overview and summarises the three comparison studies, which are individually documented in the following three reports.We have documented these comparisons in the following documents: We have been involved with several studies that compared the various OrcaFlex time domain VIV models against real-world measurements of VIV. R1429#01#01 OrcaWave validation report summarises the validation work, and includes all input data files and meshes used in the validation report. We have validated OrcaWave by comparing its results to theoretical predictions where possible, and also by comparing results from OrcaWave to results from Wamit. This major new area of functionality was introduced to OrcaFlex version 11.0 in November 2019. OrcaWave is a diffraction analysis program which calculates loading and response for wet bodies due to surface water waves via potential flow theory. A floating wind turbine system – based on the OC3 Hywind system.
The study looks at two separate turbine systems:
R1405#01#01 Wind Turbine Validation Report summarises the validation work, which considered the National Renewable Energy Laboratory (NREL) offshore 5-MW baseline wind turbine, recognised as an industry-standard reference turbine system. We have performed validation of the OrcaFlex turbine model object against documented studies available within industry.
ORCAFLEX TORSION SERIES
In Nigel Barltrop’s book Dynamics of Floating Structures: Volume 2.Ī comparison of statistical properties of maxima from OrcaFlex generated wave elevation time series with theoretical values OrcaFlex is compared against results presented Resulting effective tension and wall tension that OrcaFlex reports. Validation of OrcaFlex’s handling of wave load RAOs.Ī validation of the way OrcaFlex handles buoyancy forces and pipe internal contents pressure effects, and the Results from the BMT frequency domain program NMIWAVE with OrcaFlex time domain results. Three separate comparisons with standard theoretical results: (1) the catenary equations, extended to allow forĪxial stretch (2) natural frequencies of a beam (3) deflection of a cantilever beam.Ī validation of OrcaFlex’s implementation of frequency dependent added mass and damping for vessels. This paper considers numerical analysis of the large-deflection due to coupled torsion/bending of a weightless
The continuous equations rather than the discretised finite element approach of OrcaFlex.Ī comparison with published work by Reismann, in the International Journal of Non-Linear Mechanics. OrcaFlex to a solution of the governing set of continuous equations for a cable with bending stiffnessįor a static case.This comparison is a particularly strong validation of OrcaFlex since the authors use Static and dynamic comparisonsĪ comparison with published results from a paper published at OMAE 2005.
ORCAFLEX TORSION CODE
OrcaFlex to a code written as part of the author’s PhD study. Wave dynamics and irregular wave dynamics.Ī comparison with published results from a paper published at OMAE 2006. We also publish a number of more detailed validation cases: 99/101Ī comparison with Flexcom for a typical deepwater SCR. We recommend that you read this document first.
The document also presents some comparisons of OrcaFlex with both real world data and other programs.
ORCAFLEX TORSION SOFTWARE
The principal validation document for OrcaFlex is 99/005 OrcaFlex QA, Testing and Validation which describes the overall software QA process we use for developing OrcaFlex.
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