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A high-order public domain code for direct numerical simulations of turbulent combustion
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för astronomi. Stockholms universitet, Nordiska institutet för teoretisk fysik (Nordita).ORCID-id: 0000-0002-7304-021X
2011 (engelsk)Inngår i: Journal of Computational Physics, ISSN 0021-9991, E-ISSN 1090-2716, Vol. 230, nr 1, s. 1-12Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

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.

sted, utgiver, år, opplag, sider
2011. Vol. 230, nr 1, s. 1-12
Emneord [en]
Public domain DNS code, Turbulent combustion
HSV kategori
Identifikatorer
URN: urn:nbn:se:su:diva-50480DOI: 10.1016/j.jcp.2010.08.028ISI: 000284670300001OAI: oai:DiVA.org:su-50480DiVA, id: diva2:381591
Tilgjengelig fra: 2010-12-28 Laget: 2010-12-28 Sist oppdatert: 2022-03-09bibliografisk kontrollert

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