DNS-PDF simulation of turbulent mixing in a reactive planar jet

Tomoaki Watanabe, Yasuhiko Sakai, Kouji Nagata, Yasumasa Ito, Osamu Terashima, Toshiyuki Hayase

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Probability density function (PDF) method is implemented in direct numerical simulation (DNS) to simulate turbulent reactive flows (DNS-PDF method). In the DNS-PDF method, a flow field and a non reactive scalar are predicted by the DNS, whereas reactive scalars are predicted by the Lagrangian PDF method, in which a transport equation of joint PDF of reactive scalars is solved by using a large number of notional particles. A mixing time scale for a mixing model used in the PDF method is directly estimated from the DNS result. In the present model for the mixing time scale, the effect of distance between notional particles is implicitly taken into account. The DNS-PDF method is applied to a planar jet with a second-order chemical reaction. The results show that the DNS-PDF method can accurately predict the rms value of mixture fraction fluctuation, and the present model for the mixing time scale is valid. It is also found that the DNS-PDF method can accurately predict mean concentrations of reactive species.

Original languageEnglish
Title of host publicationAsiaSim 2013 - 13th International Conference on Systems Simulation, Proceedings
PublisherSpringer Verlag
Pages445-452
Number of pages8
ISBN (Print)9783642450365
DOIs
Publication statusPublished - 2013
Event13th International Conference on Systems Simulation, AsiaSim 2013 - , Singapore
Duration: 2013 Nov 62013 Nov 8

Publication series

NameCommunications in Computer and Information Science
Volume402
ISSN (Print)1865-0929

Other

Other13th International Conference on Systems Simulation, AsiaSim 2013
CountrySingapore
Period13/11/613/11/8

Keywords

  • Chemical reaction
  • Mixing
  • Numerical simulation
  • Turbulent flow

ASJC Scopus subject areas

  • Computer Science(all)
  • Mathematics(all)

Fingerprint Dive into the research topics of 'DNS-PDF simulation of turbulent mixing in a reactive planar jet'. Together they form a unique fingerprint.

Cite this