DNS of Flows over Periodic Hills using a Discontinuous Galerkin Spectral-Element Method | Zendy

Laslo T. Diosady | Zendy; Scott M. Murman | Zendy

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DNS of Flows over Periodic Hills using a Discontinuous Galerkin Spectral-Element Method

Author(s) -

Laslo T. Diosady,

Scott M. Murman

Publication year - 2014

Publication title -

46th aiaa fluid dynamics conference

Language(s) - English

Resource type - Conference proceedings

DOI - 10.2514/6.2014-2784

Subject(s) - discontinuous galerkin method , element (criminal law) , galerkin method , spectral element method , computer science , finite element method , mathematics , geology , structural engineering , engineering , extended finite element method , political science , law

ow in a channel. The higher-order method is shown to provide increased accuracy relative to low-order methods at a given number of degrees of freedom. The turbulent ow over a periodic array of hills in a channel is simulated at Reynolds number 10,595 using an 8th-order scheme in space and a 4th-order scheme in time. These results are validated against experiment and compared with previous large eddy simulation (LES) results. A preliminary analysis provides insight into how these detailed simulations can be used to improve Reynolds-averaged Navier-Stokes (RANS) modeling.

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