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Influence of Flow Swirling on the Aerothermodynamic Behaviour of Flames

In English

Författare

Summary, in English

The present work focuses on the numerical simulation of diffusive flames in a confined high-swirl burner. Navier-Stokes equations expressed for a time-dependent, compressible, and three-dimensional flow with finite-rate kinetics are solved for lean methane/air mixtures. A simplified mechanism is used to model the combustion. Non-reactive and reactive cases are contrasted for a swirl number of 0.95. Three flames for swirl numbers of 0, 0.6, and 0.95 are analyzed. In swirling flows, the inner recirculation zone is mainly composed of reaction products, which help in ignition of the incoming fuel. Moreover, the forward stagnation point plays an important role, leading to an azimuthal deflection of the flame front.

Avdelning/ar

Publiceringsår

2015

Språk

Engelska

Sidor

424-430

Publikation/Tidskrift/Serie

Combustion, Explosion, and Shock Waves

Volym

51

Issue

4

Dokumenttyp

Artikel i tidskrift

Förlag

Pleiades Publishing

Ämne

  • Fluid Mechanics and Acoustics

Nyckelord

  • reactive flow
  • recirculation zone
  • CFD
  • swirling flows
  • stretched flames

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0010-5082