rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Numerical stability and accuracy of temporally coupled multi-physics modules in wind-turbine CAE tools
  title info:
    title: Numerical stability and accuracy of temporally coupled multi-physics modules in wind-turbine computer-aided engineering tools
  name:
    name part: Gasmi, Amir
    role:
      role term: creator
    role:
      role term: author.
  name:
    name part: National Renewable Energy Laboratory (U.S.)
    role:
      role term: issuing body.
  type of resource: text
  genre: bibliography
  genre: conference publication
  origin info:
    place:
      place term: cou
    date issued: 2013
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: remote
    extent: 1 online resource (16 pages) : illustrations (some color).
  abstract: 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.
  note: Amir Gasmi [and three others].
  note: "Presented at the 51st AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition."
  note: GPO Cataloging Record Distribution Program (CRDP).
  note: Includes bibliographical references (page 16).
  note: U.S. Department of Energy DE-AC36-08GO28308
  subject:
    geographic code: n-us---
  subject:
    name:
      name part: American Institute of Aeronautics and Astronautics.
  subject:
    name:
      name part: AIAA Aerospace Sciences Meeting (51st : 2013 : Grapevine, Tex.)
  subject:
    topic: Wind turbines
  subject:
    topic: Aerodynamics
    topic: Mathematical models
  subject:
    topic: Computer-aided engineering
  subject:
    topic: Aerodynamics
    topic: Mathematical models
  subject:
    topic: Computer-aided engineering
  subject:
    topic: Wind turbines
  classification: E 9.17:NREL/CP-2 C 00-57298
  related item:
    title info:
      title: Conference paper (National Renewable Energy Laboratory (U.S.)) ; NREL/CP-2C00-57298
  identifier: https://purl.fdlp.gov/GPO/gpo158360
  record info:
    record content source: WYU
    record creation date: 130703
    record change date: 20220513172708.5
    record identifier: in00004369315
    language of cataloging:
      language term: eng