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Updated: 27 min 8 sec ago

Software Releases: FAST v8.16.00 Available

Wed, 07/27/2016 - 11:31
We have released a new version of the FAST v8 wind turbine multi-physics engineering software tool, along with its various modules, to our website.

FAST v8.16.00a-bjj is the latest public release under the FAST Modularization Framework. Major changes in v8.16 and its various modules from the previous release include the following:
  • We added full-system linearization functionality for land-based wind turbines, including core (but not all) features of the InflowWind, AeroDyn v15, ServoDyn, and ElastoDyn modules and their coupling. While most physics in FAST are nonlinear, linearization of the underlying nonlinear system equations is often advantageous to understand the system response and exploit well-established methods and tools for analyzing linear systems.
  • In BeamDyn, we added the full finite-element mass and stiffness matrices of the blade model at time zero to the BeamDyn summary file; these are useful for checking the standalone blade natural frequencies.
  • We fixed a bug in BeamDyn related to how it is initialized when nonzero initial deflections/displacements are set in ElastoDyn.
See the updated documentation and change logs for a complete list of enhancements and bug fixes.

FAST v8.16.00a-bjj is available at https://nwtc.nrel.gov/FAST8.

Statistics: Posted by Bonnie.Jonkman — Wed Jul 27, 2016 11:31 am

Software Releases: FAST 8.15.00 Available

Thu, 04/14/2016 - 13:17
We have released a new version of the FAST v8 wind turbine multi-physics engineering software tool, along with its various modules, to our website.

FAST v8.15.00a-bjj is the latest public release under the FAST Modularization Framework. Major changes in v8.15 and its various modules from the previous release include the following:

  • We added visualization capability based on either surface or stick-figure geometry for model reference and initial configurations and time-series animation. FAST can now generate Visualization ToolKit (VTK) output files that can be read and viewed in standard open-source visualization packages such as ParaView or VisIt. See the example FAST-generated surface visualization graphic below.
  • In AeroDyn v15, we added unsteady airfoil aerodynamics, improved the existing blade-element/momentum code, and updated the documentation.
  • We added tower-based tuned mass dampers (TMDs) to ServoDyn, in addition to the nacelle-based TMDs previously available. Furthermore, the TMD capability (for both nacelle- and tower-based TMDs) has been updated with expanded functionality.
  • Documentation for BeamDyn has been updated.
  • Documentation for routines in the NWTC_Library has been added.
  • We fixed many bugs.
See the updated documentation and change logs for a complete list of enhancements and bug fixes.

FAST v8.15.00a-bjj is available at https://nwtc.nrel.gov/FAST8.

Statistics: Posted by Bonnie.Jonkman — Thu Apr 14, 2016 12:17 pm

Software Releases: FAST v8.12.00 Available

Thu, 10/08/2015 - 14:46
We have released a new version of the FAST v8 wind turbine multi-physics engineering software tool, along with its various modules, to our website.

FAST v8.12.00a-bjj is the fifth public release under the FAST Modularization Framework. Major changes in v8.12 and its various modules from the previous release include the following:

  • We introduced new features to support the analysis of advanced aero-elastically tailored blades, including the new BeamDyn nonlinear finite-element module and an overhauled version of the AeroDyn aerodynamics module (v15).
  • We separated the InflowWind wind module from AeroDyn and updated InflowWind to support HAWC wind file formats and arbitrary wind directions for all wind file types.
  • We developed a driver for AeroDyn v15, allowing aerodynamic analysis in standalone mode uncoupled from FAST.
  • We added functionality around the interface to Bladed-style DLL controllers in the SerovDyn control and electrical-drive dynamics module.
  • We added the ability to use externally generated wave elevations or full externally generated wave kinematics within the HydroDyn hydrodynamics module.
  • We added an interface between FAST and the OrcaFlex commercial software package developed by Orcina for advanced hydrodynamic and mooring analysis and design.
  • We completed the MoorDyn lumped-mass mooring-dynamics module.
  • We completed the IceDyn surface ice-dynamics module.
  • We added checkpoint-restart capability.
  • We added integrations for the FAST v8-SOWFA/OpenFOAM interface (although this update to SOWFA has not yet been released).
  • We fixed a few bugs and gfortran compatibility problems.
  • FAST v8 has now officially been released under the Apache 2.0 open-source license.
See the updated documentation and change logs for a complete list of enhancements and bug fixes.

FAST v8.12.00a-bjj is available at https://nwtc.nrel.gov/FAST8.

--
The FAST development team

Statistics: Posted by Bonnie.Jonkman — Thu Oct 08, 2015 1:46 pm

Modeling Workshops: Presentation from Jun-2015 FAST Seminar Available

Thu, 06/11/2015 - 06:27
Dear Wind Turbine Modeling Enthusiast,

In conjunction with the North American Wind Energy Academy (NAWEA) 2015 Symposium, I led a pre-conference seminar on June 8, 2015 regarding the FAST wind turbine multi-physics engineering tool. The presentation provides an overview of FAST and outlines the planned transition to an open-source developer community. The presentation from this seminar is now available from here: http://wind.nrel.gov/public/jjonkman/Pr ... onkman.pdf.

Enjoy!

Best regards,

Statistics: Posted by Jason.Jonkman — Thu Jun 11, 2015 5:27 am

Software Releases: FAST v8.10.00a Has Been Released

Thu, 04/02/2015 - 12:11
We have recently released a new version of the FAST v8 wind turbine computer-aided engineering (CAE) software tool along with its various components to our new website.

FAST v8.10.00a-bjj is the fourth public release under the FAST Modularization Framework. Major changes in v8.10 and its various modules from the previous release include the following:

  • We developed an interface between FAST v8 and Simulink.
  • We added high-speed shaft braking to ServoDyn.
  • We added gearbox friction to ElastoDyn.
  • We replaced MAP with MAP++, an updated mooring module that is also functional in 64-bit Windows®.
  • We added nacelle-based tuned-mass dampers to ServoDyn.
  • We added rotational interpolation to the mesh mapping routines.
  • We added MoorDyn, a new lumped-mass-based mooring module (still incomplete).
  • We released documentation for IceFloe, FEAMooring, and DWM.
  • We updated the SubDyn User’s Guide and Theory Manual.
  • We fixed a few bugs.
See the updated documentation and change logs for a complete list of enhancements and bug fixes.

Please note that the highly anticipated BeamDyn module is not included in this release. We expect to release an update to FAST v8 including BeamDyn (and other improvements) by July 2015.

FAST v8.10.00a-bjj is available at https://nwtc.nrel.gov/FAST8.

--
The FAST development team

Statistics: Posted by Bonnie.Jonkman — Thu Apr 02, 2015 11:11 am

Other News: 3rd Biannual Wind Energy Systems Engineering Workshop

Thu, 11/20/2014 - 09:47
Hello everyone,

Registration for the 3rd biannual workshop on wind energy systems engineering is now open! Please register on the workshop website here:
http://www.nrel.gov/wind/systems_engine ... _2015.html
Note that there is a discounted registration fee before December 15th, 2014.

This year’s workshop features an exciting line-up of speakers on the topic of integrated system analysis and design of wind turbines and plants. The full agenda is can be found here:
https://nwtc.nrel.gov/system/files/Draf ... 102014.pdf . We hope you will join us!

Also, there will be a poster session and we are currently accepting abstracts. Please submit your <250 word abstract and short biography to systems.engineering@nrel.gov .

Please distribute to those who you think may be interested, and please contact me if you have any questions.

Statistics: Posted by Katherine.Dykes — Thu Nov 20, 2014 9:47 am

Software Releases: IceFloe v1.00.00 Is Now Available

Fri, 11/07/2014 - 12:44
Documentation and an archive for IceFloe v1.00.00 were recently added to our web site.

IceFloe is a set of routines that calculates time-domain loads induced by surface ice on offshore substructures, for use with wind turbine aeroelastic simulation codes, including FAST. When coupled to an aeroelastic code, the coupling is one-way for all but one of the optional ice models; that is, the ice loads are transferred from IceFloe to the aeroelastic code, but the structural response does not impact the ice-loading calculations. IceFloe includes multiple options for a range of ice induced loading phenomena including models for both vertical and conical shaped substructures.

The source code for IceFloe necessary for compiling with FAST v8 was previously available as part of the FAST archive; the new IceFloe website now provides additional source code for IceFloe’s standalone driver and interfaces with other codes, theory information and guidance for running IceFloe. It also provides binaries for running IceFloe with other offshore wind-turbine simulation tools. You can access IceFloe here: https://nwtc.nrel.gov/IceFloe.

Statistics: Posted by Bonnie.Jonkman — Fri Nov 07, 2014 12:44 pm

Software Releases: New Version of FAST v8 Available (v8.09.00a)

Wed, 10/08/2014 - 13:10
We have recently released a new version of the FAST v8 wind turbine computer-aided engineering (CAE) software tool, and its various modules to our new website.

FAST v8.09.00a-bjj is the third public release under the FAST Modularization Framework. Major changes in v8.09 and its various modules from the previous release include the following:
  • Second-order wave hydrodynamic terms were added to HydroDyn, including second-order wave kinematics for use with the strip-theory solution and second-order potential flow, based on WAMIT-supplied quadratic-transfer functions (QTFs). Previous versions of HydroDyn were based solely on first-order hydrodynamics theory. The second-order hydrodynamic implementations include time-domain calculations of difference- (mean- and slow-drift-) and sum-frequency terms and support regular and irregular sea states and wave directional spreading.
  • A draft SubDyn User’s Guide and Theory Manual has been written.
  • The tower distributed with the OC3-tripod model in the FAST certification test was corrected.
  • A few bugs have been fixed.
See the updated documentation and Change Logs for a complete list of enhancements.

FAST v8.09.00a-bjj is available at https://nwtc.nrel.gov/FAST8.

Happy Modeling!

Statistics: Posted by Jason.Jonkman — Wed Oct 08, 2014 12:10 pm

Other News: New wind.nrel.gov Website

Wed, 09/24/2014 - 16:23
We are happy to announce the release of the new http://nwtc.nrel.gov website, which replaces much of the old wind.nrel.gov website. The new website is still used for NREL/NWTC’s sharing of software and data with the wind engineering community, but sports a more modern, flexible, and easier-to-navigate interface. The new website also resolves a fundamental complaint with the previous website—that user information had to be entered separately with every download. You can browse the new website without logging in, but most downloads now require registering for an account and logging in with a username and password. While registration is now required for most downloads, the software and data are still free and open source.

Please note that most of the software and data available on the new website are the same as what was available on the old website, but the formatting and organization have changed. We are working to redirect all the old links, but if you find one that doesn't work, please use the new search feature in the upper left on the new site. In addition to the CAE tools that already exist, a new class of tools has been added as part of the new Wind-Plant Integrated Systems Design and Engineering Model (WISDEM) suite. These new models include design, sizing and cost tools as well as the overarching WISDEM software which integrates them together. Look for a more detailed announcement about the new models in the near future.

Enjoy!

Statistics: Posted by Katherine.Dykes — Wed Sep 24, 2014 3:23 pm

Modeling Workshops: Materials from Sep-2014 Modeling Workshop Available

Mon, 09/15/2014 - 16:35
Dear Wind Turbine Modeling Enthusiast,

In partnership with the Norwegian Centre for Offshore Wind Energy (NORCOWE) and the National Renewable Energy Laboratory (NREL), I led a Wind Turbine Modeling Workshop in Bergen, Norway on September 11-12, 2014. The presentations and sample simulations that were presented at this workshop are now available from: http://wind.nrel.gov/public/jjonkman/Pr ... genNorway/. The presentations and sample simulations provide an overview of the NREL-developed CAE tools, with a focus on FAST v8.

Enjoy!

Best regards,

Statistics: Posted by Jason.Jonkman — Mon Sep 15, 2014 3:35 pm

Software Releases: New Version of FAST v8 Available

Sun, 07/06/2014 - 15:56
We have recently released a new version of the FAST v8 wind turbine computer-aided engineering (CAE) software tool, and its various modules to our website:

FAST v8.08.00c-bjj (http://wind.nrel.gov/designcodes/simulators/FAST8/)

Modules:
ElastoDyn v1.01.06b-bjj (included in FAST8 link above)
AeroDyn v14.02.01c-bjj (http://wind.nrel.gov/designcodes/simula ... dyn/alpha/)
InflowWind v2.00.01b-bjj (http://wind.nrel.gov/designcodes/simula ... ind/alpha/)
ServoDyn v1.01.02a-bjj (included in FAST8 link above)
HydroDyn v2.01.01c-gjh (http://wind.nrel.gov/designcodes/simulators/hydrodyn/)
SubDyn v1.01.00a-rrd (http://wind.nrel.gov/designcodes/simulators/subdyn/)
MAP v0.97.01a-mdm (http://wind.nrel.gov/designcodes/simulators/map/)
IceFloe v1.00.00 (http://wind.nrel.gov/designcodes/simulators/IceFloe/)

Other Components:
NWTC Subroutine Library v2.03.03b-bjj (http://wind.nrel.gov/designcodes/miscel ... C_Library/)
FAST Registry v2.03.01 (included in FAST8 link above)

FAST v8.08.00c-bjj is the second public release under the FAST Modularization Framework. Major changes in v8.08 and its various modules include:
  • FAST v8 has undergone extensive verification and many problems with the first release have now been fixed
  • Coupling between ElastoDyn, SubDyn, and HydroDyn was added, allowing FAST to model the coupled aero-hydro-servo-elastic response of fixed-bottom offshore turbines, including multi-member substructures (e.g., tripods and jackets).
  • The OC3-Tripod, OC4-Jacket, and OC4-DeepCwind semi-submersible were added to the certification test (as example models).
  • The FAST glue code (driver program) used to couple modules together was improved, with new spatial mesh-mapping and time-stepping functionality and enhanced efficiency.
  • The Static Improvement Method was implemented in SubDyn, reducing the number of modes needed to obtain an accurate solution.
  • Many of the hydrodynamic load equations in HydroDyn have been updated/augmented, including new dynamic-pressure coefficients, new axial coefficients, and new lumped fluid-inertia loads.
  • Support for multi-directional waves was added to HydroDyn.
  • A draft HydroDyn User’s Guide and Theory Manual has been written.
  • New modules for offshore surface ice loading have been developed and coupled to FAST.
  • And much more...
See the updated documentation and Change Logs for a complete list of enhancements.

Happy Modeling!

Statistics: Posted by Jason.Jonkman — Sun Jul 06, 2014 2:56 pm

Modeling Workshops: Modeling workshop to be held September 11-12, 2014

Tue, 05/27/2014 - 21:06
Dear Wind Turbine Modeling Enthusiast,

In partnership with the Norwegian Centre for Offshore Wind Energy (NORCOWE) and the National Renewable Energy Laboratory (NREL), a workshop on the FAST wind turbine computer-aided engineering (CAE) software tool developed by NREL will be held on September 11 – 12, 2014 in Bergen, Norway. This workshop is being held in conjunction with the offshore wind conference Science Meets Industry Bergen taking place September 9. More information, including a registration form is available from: http://norcowe.no/index.cfm?id=412931.

Best regards,

Statistics: Posted by Jason.Jonkman — Tue May 27, 2014 8:06 pm

Software Releases: Minor Update to Siesmic Available (v2.00.00)

Tue, 05/13/2014 - 10:47
Ian Prowell of MMI Engineering has recently updated the Siesmic loading module for FAST.

New features and changes in this release include:
  • Ported code and example files to work with FAST v7.02.00d-bjj
  • Fixed error in spectral matching so that the frequency range to match is properly interpreted
  • Improved transient behavior at the end of specified motion
  • Updated output format of synthetic acceleration files to match input format for easier re-use
  • Streamlined code to improve readibility
You can download this latest version of Siesmic here: http://wind.nrel.gov/designcodes/simulators/seismic/.

Happy Modeling!

Statistics: Posted by Jason.Jonkman — Tue May 13, 2014 9:47 am

Other News: Wind Plant Optimization and Systems Engineering newsletter

Wed, 02/26/2014 - 11:46
The Wind Plant Optimization and Systems Engineering Newsletter series from the National Renewable Energy Laboratory (NREL) Wind Energy Systems Engineering Initiative highlights current system approaches to the wind energy research, design, engineering, and development. Each quarterly edition provides short overviews of the integrated, interdisciplinary, and holistic work that is happening in this field. The wind industry community increasingly recognizes the need for a systems approach, and this newsletter serves to support stakeholders who engage with this important work.

First Quarter, Fiscal Year 2014 (Edition 2) is available here http://www.nrel.gov/wind/systems_engineering/news.html.

Statistics: Posted by Katherine.Dykes — Wed Feb 26, 2014 11:46 am

Other News: Other News

Wed, 02/26/2014 - 11:41
This topic includes news on individual projects, publications and other NWTC activities.

Statistics: Posted by Katherine.Dykes — Wed Feb 26, 2014 11:41 am