FAST_AD Code Verification: A Comparison to ADAMS

Marshall L. Buhl, Alan D. Wright, Kirk G. Pierce

Research output: Contribution to conferencePaperpeer-review

11 Scopus Citations


The National Renewable Energy Laboratory's National Wind Technology Center (NWTC) has refocused its wind-turbine design-code comparison effort to verify FAST_AD with ADAMS®. FAST_AD is a wind-turbine structural-response code developed by Oregon State University for the NWTC. ADAMS is a commercial, general-purpose, multibody-dynamics code developed by Mechanical Dynamics, Inc. ADAMS, which is used in many industries, has been rigorously tested.1,2,3,4 Both ADAMS and FAST_AD use the AeroDyn subroutine package for calculating aerodynamic forces. The University of Utah developed AeroDyn for the NWTC. To compare FAST_AD to ADAMS, we modeled a rough approximation of the AWT-27 P4 turbine, using the same properties for both simulators. The AWT-27 is a 275-kilowatt (kW), two-bladed wind turbine. We also created three-bladed versions of the turbine models to verify FAST_AD for three-bladed turbines. In this paper, we list the aerodynamic features used in the comparison. We also explain how the programs model the turbine structure, describe the degrees of freedom (DOFs) used for this study, and present simulation comparisons that show very good agreement.

Original languageAmerican English
Number of pages13
StatePublished - 2001
Event20th American Society of Mechanical Engineers (ASME) Wind Energy Symposium - Reno, Nevada
Duration: 8 Jan 200111 Jan 2001


Conference20th American Society of Mechanical Engineers (ASME) Wind Energy Symposium
CityReno, Nevada

NREL Publication Number

  • NREL/CP-500-28848


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