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Contract No. DE-AC36-08GO28308

Wind Energy R&D Collaboration 

between NIRE and NREL

Cooperative Research and 

Development Final Report

CRADA Number: CRD-11-437

NREL Technical Contact: Patrick Moriarty

CRADA Report

NREL/TP-5000-63411

January 2015
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Cover Photos: (left to right) photo by Pat Corkery, NREL 16416, photo from SunEdison, NREL 17423, photo by Pat Corkery, NREL 

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This report is available at no cost from the National Renewable Energy Laboratory (NREL) at www.nrel.gov/publications.

Cooperative Research and Development Final Report

In accordance with Requirements set forth in Article XI.A(3) of the CRADA document, this document is 

the final CRADA report, including a list of Subject Inventions, to be forwarded to the Office of Science 

and Technical Information as part of the commitment to the public to demonstrate results of federally 

funded research.

Parties to the Agreement: Texas Tech University

CRADA Number: CRD-11-437

CRADA Title: Wind Energy R&D Collaboration between NIRE and NREL

Joint Work Statement Funding Table Showing DOE Commitment:

Estimated Costs NREL Shared Resources

Year 1 $ 20,000.00

TOTALS $ 20,000.00

Abstract of CRADA Work:

This work includes, but is not limited to, research and development of joint technology development and 

certification efforts in the wind power sector; providing access to commercial wind farm and federal 

facilities to enhance R&D; identification of workforce development best practices. This work will be 

done at Contractor and Participant facilities.

Summary of Research Results:

This CRADA was used to host a graduate student from Texas Tech University at the National Wind 

Technology Center. During his visit, the student investigated scaling laws that were adopted for the 

DeepCwind project for testing three different floating wind systems at 1/50 scale in a wave tank under 

combined wind and wave loading. The scaling approach adopted was verified through FAST, an aerohydro-servo-elasto dynamic modeling tool, by comparing the consistency of simulation results between 

model and full scale. The Froude scaling approach does not maintain proper Reynolds number scaling and 

the implications of this issue were discussed.

Subject Inventions Listing: None

Report Date: 11/20/14

Responsible Technical Contact at Alliance/NREL: Patrick Moriarty

This document contains NO confidential, protectable, or proprietary information.