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| Paper: |
LES of Temporally Evolving Mixing Layers by Three High Order Schemes |
| Volume: |
444, 5th International Conference of Numerical Modeling of Space Plasma Flows (ASTRONUM 2010) |
| Page: |
266 |
| Authors: |
Yee, H.; Sjögreen, B.; Hadjadj, A. |
| Abstract: |
The performance of three high order shock-capturing schemes
is compared for large eddy simulations (LES) of temporally evolving mixing layers for different
convective Mach number (Mc)
ranging from the quasi-incompressible regime to highly compressible
supersonic regime.
The considered high order schemes are fifth-order WENO (WENO5),
seventh-order WENO (WENO7), and the
associated eighth-order central spatial base scheme with the dissipative portion
of WENO7 as a nonlinear post-processing filter step (WENO7fi).
This high order nonlinear filter method (Yee & Sjögreen 2009)
is designed for accurate and efficient simulations of
shock-free compressible turbulence, turbulence with shocklets and turbulence with strong shocks
with minimum tuning of scheme parameters.
The LES results by WENO7fi using the same scheme parameter agree well with experimental results of Barone et al. (2006), and published
direct numerical simulations (DNS) by Rogers & Moser (1994) and Pantano & Sarkar (2002),
whereas results by WENO5 and WENO7
compare poorly with experimental data and DNS computations. |
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