OC6 Phase Ia - Nonlinear hydrodynamic loading validation dataset

Overview

Two validation campaigns were examined within the Offshore Code Comparison Collaboration, Continued, with Correlation and unCertainty (OC6) Phase 1 project to examine the modeling tools' underprediction of loads and motion of a floating wind semisubmersible (semi) at their surge and pitch natural frequencies. These campaigns were performed at the Maritime Research Institute Netherlands (MARIN) in 2017 and 2018. The load cases (LC) considered include:

LC1 – Load measurements across semi under current loading;

LC2 - Load measurements across semi under forced surge oscillation;

LC3 – Load measurements across semi under wave loading, while held fixed;

LC4 – Free-decay motion measurements in surge, pitch, and heave; and

LC5 – Motion measurements under wave loading.

Details on the results from the OC6 Phase Ia project can be found in the reference, “OC6 Phase 1: Investigating the underprediction of low-frequency hydrodynamic loads and responses of floating wind turbines”, J Phys: Conf Series 1618 032033.

Data Details

The naming of the datafiles follows the convention: oc6.phase1a.name.loadcase.txt. The experimental measurements use the name “EXP0”. Simulation results are also provided from those that participated in the OC6 Phase Ia validation project. The suffix “.txt” is replaced with “.tot” and “.hyd” and for load cases 1 and 2, representing the total load measurement, and just the hydrodynamic component.

Data Quality

The aim is to provide accurate and high-quality data. Whenever possible, instrumentation is calibrated by the manufacturer and then verified for use.

Uncertainty

A full assessment of the uncertainty in this dataset was performed, and findings were published in the paper, "Total experimental uncertainty in hydrodynamic testing of a semisubmersible wind turbine, considering numerical propagation of systematic uncertainty," Ocean Engineering 195 (2020) 106605.

Data and Resources

Field Value
DOI 10.21947/1775070
accessLevel public
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identifier https://data.openei.org/submissions/4474
issued 2021-08-09T00:00:00Z
landingPage https://a2e.energy.gov/data/oc6/oc6.phase1a
license https://creativecommons.org/licenses/by/4.0/
modified 2021-10-11T00:00:00Z
programCode {019:010}
projectNumber 67025
projectTitle Wind Data Hub
publisher Wind Energy Technologies Office (WETO)
resource-type Dataset
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Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • a2e
  • amerigeo
  • amerigeoss
  • atmosphere-to-electrons
  • ckan
  • eere
  • geo
  • geoss
  • national
  • nonlinear-hydrodynamic-loading-validation-dataset
  • north-america
  • oc6
  • oc6-phase-ia
  • offshore-code-comparison-collaboration-continued-with-correlation-and-uncertainty
  • phase1a
  • united-states
  • weto
  • wind
isopen True
license_id cc-by
license_title Creative Commons Attribution
license_url http://www.opendefinition.org/licenses/cc-by
maintainer Amy Robertson
maintainer_email amy.robertson@nrel.gov
metadata_created 2025-11-22T19:28:36.638164
metadata_modified 2025-11-22T19:28:36.638168
notes **Overview** Two validation campaigns were examined within the Offshore Code Comparison Collaboration, Continued, with Correlation and unCertainty (OC6) Phase 1 project to examine the modeling tools' underprediction of loads and motion of a floating wind semisubmersible (semi) at their surge and pitch natural frequencies. These campaigns were performed at the Maritime Research Institute Netherlands (MARIN) in 2017 and 2018. The load cases (LC) considered include: LC1 – Load measurements across semi under current loading; LC2 - Load measurements across semi under forced surge oscillation; LC3 – Load measurements across semi under wave loading, while held fixed; LC4 – Free-decay motion measurements in surge, pitch, and heave; and LC5 – Motion measurements under wave loading. Details on the results from the OC6 Phase Ia project can be found in the reference, “OC6 Phase 1: Investigating the underprediction of low-frequency hydrodynamic loads and responses of floating wind turbines”, J Phys: Conf Series 1618 032033. **Data Details** The naming of the datafiles follows the convention: oc6.phase1a.name.loadcase.txt. The experimental measurements use the name “EXP0”. Simulation results are also provided from those that participated in the OC6 Phase Ia validation project. The suffix “.txt” is replaced with “.tot” and “.hyd” and for load cases 1 and 2, representing the total load measurement, and just the hydrodynamic component. **Data Quality** The aim is to provide accurate and high-quality data. Whenever possible, instrumentation is calibrated by the manufacturer and then verified for use. **Uncertainty** A full assessment of the uncertainty in this dataset was performed, and findings were published in the paper, "Total experimental uncertainty in hydrodynamic testing of a semisubmersible wind turbine, considering numerical propagation of systematic uncertainty," Ocean Engineering 195 (2020) 106605.
num_resources 1
num_tags 18
title OC6 Phase Ia - Nonlinear hydrodynamic loading validation dataset