A high-order public domain code for direct numerical simulations of turbulent combustion

Details A high-order public domain code for direct numerical simulations of turbulent combustion A high-order public domain code for direct numerical simulations of turbulent combustion

2010-05-28

arxiv.org/abs/1005.5301v1

J. Comp. Phys., 230, 1-12 (2011)

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

22 pages, 8 figures

Scientific paper

10.1016/j.jcp.2010.08.028

A high-order scheme for direct numerical simulations of turbulent combustion is discussed. Its implementation in the massively parallel and publicly available Pencil Code is validated with the focus on hydrogen combustion. Ignition delay times (0D) and laminar flame velocities (1D) are calculated and compared with results from the commercially available Chemkin code. The scheme is verified to be fifth order in space. Upon doubling the resolution, a 32-fold increase in the accuracy of the flame front is demonstrated. Finally, also turbulent and spherical flame front velocities are calculated and the implementation of the non-reflecting so-called Navier-Stokes Characteristic Boundary Condition is validated in all three directions.

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