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.
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 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.
All rights reserved.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.
The published examples, each of which has an accompanying description, are a great way to deepen your understanding of OrcaFlex and its range of capabilities.įinally, please feel free to contact Orcina or your Orcina agent should you require further details about OrcaFlex or our other software. The help browser is installed alongside OrcaFlex it can also be downloaded from or the help topics can be viewed on-line If you are new to OrcaFlex then the best place to start is the tutorial, followed by the more detailed description of the user interface. It also contains the only published source of the theory behind OrcaFlex, augmented by a handful of technical notes at This documentation is available in the form of a dedicated OrcaFlex help browser, which presents context-sensitive help from within the program when F1 is pressed.
This documentation explains how to build a model, run the program and extract results. More introductory information can be found at including: OrcaFlex performs global static and dynamic analysis of a wide range of offshore systems, typically including boundary conditions such as vessels, buoys, etc., as well as finite element modelling of line structures.
Welcome to the documentation for OrcaFlex ( version 11.2a).