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Numerical simulation of high speed chemically reacting flow
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1994 (English)In: Theoretical and Computational Fluid Dynamics, ISSN 0935-4964, E-ISSN 1432-2250, Vol. 6, no 2-3, 161-179 p.Article in journal (Refereed) Published
Abstract [en]

The essentially nonoscillatory (ENO) shock-capturing scheme for the solution of hyperbolic equations is extended to solve a system of coupled conservation equations governing two-dimensional, time-dependent, compressible chemically reacing flow with full chemistry. The thermodynamic properties of the mixture are modeled accurately, and stiff kinetic terms are separated from the fluid motion by a fractional step algorithm. The methodology is used to study the concept of shock-induced mixing and combustion, a process by which the interaction of a shock wave with a jet of low-density hydrogen fuel enhances mixing through streamwise vorticity generation. Test cases with and without chemical reaction are explored here. Our results indicate that, in the temperature range examined, vorticity generation as well as the distribution of atomic species do not change significantly with the introduction of a chemical reaction and subsequent heat release. The actual diffusion of hydrogen is also relatively unaffected by the reaction process. This suggests that the fluid mechanics of this problem may be successfully decoupled from the combustion processes, and that computation of the mixing problem (without combustion chemistry) can elucidate much of the important physical features of the flow.

Place, publisher, year, edition, pages
1994. Vol. 6, no 2-3, 161-179 p.
Keyword [en]
HYPERBOLIC CONSERVATION-LAWS; SCHEMES; GAS
National Category
Computer and Information Science
Identifiers
URN: urn:nbn:se:kth:diva-90481DOI: 10.1007/BF00312347OAI: oai:DiVA.org:kth-90481DiVA: diva2:505660
Note
NR 20140805Available from: 2012-02-24 Created: 2012-02-24 Last updated: 2017-12-07Bibliographically approved

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