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A Simple, Efficient, and High-Order Accurate Sliding-Mesh Interface Approach to Spectral Difference Method on Coupled Rotating and Deforming/Stationary Domains

[+] Author Affiliations
Bin Zhang, Chunlei Liang, Jingjing Yang

The George Washington University, Washington, DC

Paper No. OMAE2015-41012, pp. V011T12A015; 13 pages
doi:10.1115/OMAE2015-41012
From:
  • ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 11: Prof. Robert F. Beck Honoring Symposium on Marine Hydrodynamics
  • St. John’s, Newfoundland, Canada, May 31–June 5, 2015
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-5659-8
  • Copyright © 2015 by ASME

abstract

In this paper, we present a novel sliding-mesh interface approach to the spectral difference (SD) method on coupled rotating and deforming/stationary domains. This approach is an extension of the previously reported method for coupled rotating and stationary domains for the flux reconstruction (FR) method [1]. The use of sliding-mesh interfaces not only allows us to study flows around freely rotating bodies but can also dramatically reduce grid twists on deforming domains with large-angle rotations. We test the accuracy of the solver on an inviscid flow, and it is found that the solver is high-order accurate on coupled dynamic grids with sliding-mesh interface. Simulation of viscous flow over a plunging and pitching airfoil is also carried out to verify the solver, it is seen that the solver is accurate and is very efficient in terms of computational cost. Finally, we apply the solver to study a two-dimensional vertical axis wind turbine at different Reynolds numbers. It is found that the turbine is efficient and extracts energy from the flows at high Reynolds numbers. This solver can also be applied to other problems, such as the aerodynamics of rotorcrafts, oscillating wing wind power generators.

Copyright © 2015 by ASME

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