| Zugriffsnummer | 29372 |
| Dokumenttyp | Konferenzartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Application of a PDF method to transient reactive jets |
| Autor(in); Institution |
Ghorbani, Asghar; 3.5, Zünddurchschlagsprozesse, PTB-Braunschweig
Steinhilber, Gert; University Karlsruhe, Institute of Technical Thermodynamics, Karlsruhe, GERMANY
Markus, Detlev; 3.5, Zünddurchschlagsprozesse, PTB-Braunschweig
Maas, Ulrich; University Karlsruhe, Institute of Technical Thermodynamics, Karlsruhe, GERMANY
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| Quelle/Jahr | 24rd International Colloquium on the Dynamics of Explosions and Reactive Systems : [proceedings]:(2013) |
| Konferenzangaben | 24rd International Colloquium on the Dynamics of Explosions and Reactive Systems, Taipei, 28, July - 02, August, 2013, Taiwan |
| Zusammenfassung | In this work a stand alone Probability Density Function (PDF) method is used to study ignition of premixed hydrogen/air mixture by hot turbulent jets. The case under consideration is a statistically transient premixed reactive turbulent jet. In this case, chemical reactions occur at small scales which are not resolved either in a large-eddy simulation (LES) or a Reynolds-averaged Navier-Stokes (RANS) method andmust be modeled. PDFmethods, however, achieve closure at the level of one-point, one-time joint PDFs and have been used extensively to simulate combustion and reactive flows. Convection and reactions are treated without the need for modeling. Yet, the equation for the joint PDF contains unclosed terms such as the effects of pressure gradients and the mixing process of molecular diffusion which need to be modeled. |
