A thin-walled composite beam model for light-weighted structures interacting with fluids

Trung Bao Le, Ariel Christenson, Toni Calderer, Henryk Stolarski, Fotis Sotiropoulos

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

A thin-walled beam model is proposed for structures of variable cross-section, which can be either open or closed and includes multicellular cross-sections with either isotropic or orthotropic materials. The proposed model does not require any priori definition of cross-sectional warping which instead results from the solution of the problem. To achieve that a special deformation pattern is superimposed on the bending deformation described by Euler–Bernoulli beam theory. All sectional properties are automatically incorporated in the analysis as a result of the usual variational formulation of the system of equations. The proposed model is specifically designed to simulate the dynamics of wind/hydrokinetic turbine blade with low computational cost, especially in fluid–structure interaction (FSI) simulation. A number of test cases have been carried out to validate the proposed structural model which show good agreement between the results obtained her e and the solutions available in literature. Finally, FSI simulation of a hydrokinetic blade under field condition is carried out to illustrate the capability of the current thin-walled beam model in practice.

Original languageEnglish (US)
Article number102968
JournalJournal of Fluids and Structures
Volume95
DOIs
StatePublished - May 2020

Bibliographical note

Funding Information:
This work is funded by Department of Energy, USA Grant Number DE-EE0005482 and National Science Foundation, USA Grant Number IIP-1318201 . The work is carried out under the University of Minnesota Wind Energy Consortium (EOLOS). The computations were done at the Minnesota Supercomputing Institute (University of Minnesota) and Institute of Advanced Computational Science (Stony Brook University). The lead author (Trung Bao Le) acknowledges the support for the computational time from the Director’s Discretionary Allocation of Argonne Leadership Computing Facility, which is a DOE, USA Office of Science User Facility supported under Contract DE-AC02-06CH11357 . This work also made use of computing resources at the Center for Computationally Assisted Science and Technology (CCAST), North Dakota State University. The lead author (Trung Bao Le) is partially supported by NSF, USA ND, USA EPSCoR, USA grant number FAR0030612 .

Funding Information:
This work is funded by Department of Energy, USA Grant Number DE-EE0005482 and National Science Foundation, USA Grant Number IIP-1318201. The work is carried out under the University of Minnesota Wind Energy Consortium (EOLOS). The computations were done at the Minnesota Supercomputing Institute (University of Minnesota) and Institute of Advanced Computational Science (Stony Brook University). The lead author (Trung Bao Le) acknowledges the support for the computational time from the Director's Discretionary Allocation of Argonne Leadership Computing Facility, which is a DOE, USA Office of Science User Facility supported under Contract DE-AC02-06CH11357. This work also made use of computing resources at the Center for Computationally Assisted Science and Technology (CCAST), North Dakota State University. The lead author (Trung Bao Le) is partially supported by NSF, USAND, USAEPSCoR, USA grant number FAR0030612. The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Publisher Copyright:
© 2020

Keywords

  • Blade
  • Fluid–structure interaction
  • Hydrokinetic
  • Thin-walled beam
  • Wind

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