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

Babkovskaia, Natalia (author)

Haugen, N. E. L. (author)

Brandenburg, Axel (author): Stockholms universitet,Institutionen för astronomi,Nordiska institutet för teoretisk fysik (Nordita)

(creator_code:org_t)

Elsevier BV, 2011
2011
English.
In: Journal of Computational Physics. - : Elsevier BV. - 0021-9991 .- 1090-2716. ; 230:1, s. 1-12

Related links:: http://arxiv.org/pdf...; show more...; https://urn.kb.se/re...; https://doi.org/10.1...; show less...

Abstract Subject headings

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. This is the first open source DNS code with detailed chemistry available. An attempt has been made to present, for the first time, the full set of evolution and auxiliary equations required for a complete description of single phase non-isothermal fluid dynamics with detailed chemical reactions. 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.

By the author/editor: Babkovskaia, Nat ...; Haugen, N. E. L.; Brandenburg, Axe ...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Astronomy Astrop ...

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