- Additional Authors
- National Renewable Energy Laboratory (U.S.), issuing body
- Series Statement
- Conference paper ; NREL/CP-2C00-57298
- Uniform Title
- Conference paper (National Renewable Energy Laboratory (U.S.)) ; NREL/CP-2C00-57298.
- Alternative Title
- Numerical stability and accuracy of temporally coupled multi-physics modules in wind-turbine computer-aided engineering tools
- Subject
- Genre/Form
- Technical reports
- Conference papers and proceedings
- Technical reports.
- Conference papers and proceedings.
- Note
- "Presented at the 51st AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition."
- Bibliography (note)
- Includes bibliographical references (page 16).
- Funding (note)
- U.S. Department of Energy
- Source of Description (note)
- Description based on online resource; title from PDF title page (NREL, viewed on Aug. 2, 2021).
- Call Number
- GPO Internet E 9.17:NREL/CP-2C 00-57298
- OCLC
- 1065866869
- Author
Gasmi, Amir, author.
- Title
Numerical stability and accuracy of temporally coupled multi-physics modules in wind-turbine CAE tools / Amir Gasmi [and three others].
- Publisher
Golden, Colorado : National Renewable Energy Laboratory, February 2013.
- Description
1 online resource (16 pages) : illustrations (some color).
- Type of Content
text
- Type of Medium
computer
- Type of Carrier
online resource
- Series
Conference paper ; NREL/CP-2C00-57298
Conference paper (National Renewable Energy Laboratory (U.S.)) ; NREL/CP-2C00-57298. http://id.loc.gov/authorities/names/no2007111845
- Summary
In this paper we examine the stability and accuracy of numerical algorithms for coupling time-dependent multi-physics modules relevant to computer-aided engineering (CAE) of wind turbines. This work is motivated by an in-progress major revision of FAST, the National Renewable Energy Laboratory's (NREL's) premier aero-elastic CAE simulation tool. We employ two simple examples as test systems, while algorithm descriptions are kept general. Coupled-system governing equations are framed in monolithic and partitioned representations as differential-algebraic equations. Explicit and implicit loose partition coupling is examined. In explicit coupling, partitions are advanced in time from known information. In implicit coupling, there is dependence on other-partition data at the next time step; coupling is accomplished through a predictor-corrector (PC) approach. Numerical time integration of coupled ordinary-differential equations (ODEs) is accomplished with one of three, fourth-order fixed-time-increment methods: Runge-Kutta (RK), Adams-Bashforth (AB), and Adams-Bashforth-Moulton (ABM). Through numerical experiments it is shown that explicit coupling can be dramatically less stable and less accurate than simulations performed with the monolithic system. However, PC implicit coupling restored stability and fourth-order accuracy for ABM; only second-order accuracy was achieved with RK integration. For systems without constraints, explicit time integration with AB and explicit loose coupling exhibited desired accuracy and stability.
- Bibliography
Includes bibliographical references (page 16).
- Funding
U.S. Department of Energy DE-AC36-08GO28308
- Connect to:
- Added Author
National Renewable Energy Laboratory (U.S.), issuing body.
- Gpo Item No.
0430-P-04 (online)
- Sudoc No.
E 9.17:NREL/CP-2 C 00-57298
- Research Call Number
GPO Internet E 9.17:NREL/CP-2 C 00-57298