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A. Nigro, S. Renda, C. De Bartolo, R. Hartmann and F. Bassi A high-order accurate discontinuous Galerkin finite element method for laminar low Mach number flows International Journal for Numerical Methods in Fluids 72

Version of Record online: 1 OCT 2012 | DOI: 10.1002/fld.3732

Thumbnail image of graphical abstract

A DG method designed to improve the performance of steady and unsteady laminar flow simulations at low Mach numbers is proposed. The figure shows the influence on the accuracy of the following: (i) high-order discretization (top row: flat plate, u-velocity component), (ii) grid topology (middle row: NACA0012 airfoil, contours of normalized pressure), for steady-state computations, and of the (iii) flux preconditioning approach for unsteady flow simulations (bottom row: vortex shedding behind a circular cylinder, snapshots of normalized pressure).

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