Full Content is available to subscribers

Subscribe/Learn More  >

N-Heptane: Comparison of Spray Autoignition Experiments and Single Droplet Simulations

[+] Author Affiliations
Peter Rickmers, Christian Eigenbrod, Konstantin Klinkov

ZARM University of Bremen, Bremen, Germany

Paper No. GT2010-22348, pp. 291-300; 10 pages
  • ASME Turbo Expo 2010: Power for Land, Sea, and Air
  • Volume 2: Combustion, Fuels and Emissions, Parts A and B
  • Glasgow, UK, June 14–18, 2010
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4397-0 | eISBN: 978-0-7918-3872-3
  • Copyright © 2010 by ASME


To achieve high process efficiency, modern combustion machines, inject liquid hydrocarbon fuels into compressed air at high temperatures and high pressure, resulting in a limited residence time of the fuel in the combustion chamber or a premixing duct before autoignition. The residence time however, is the only available time to provide a well stirred mixture with a lean overall equivalence ratio, near the adiabatic flammability limit, reducing the combustion temperature and in turn the production of thermal nitric oxides (NOx ) produced via the Zeldovich mechanism [1]. This paper details new results of experiments conducted in a Ludwieg–tube type wind tunnel, providing high temperature (≤1000K) and pressure (≤ 1.5MPa) flows with moderate flow rates (≤ 100m/s). N-heptane was injected into the flow in a simple unobstructed jet in cross flow (JICF) configuration in the middle of the test section. Single droplet numerical simulations were then conducted with an in-house code, the closed–vessel–simulation (CVS), which allows the simulation of the autoignition of a single droplet in a closed environment with fixed overall mixture ratio, using a reduced n-heptane kinetic with 67 species and 437 reactions [2]. The simulations were compared to the spray experiments, by assuming a Rosin-Rammler distribution for the spray and mapping the CVS results onto this distribution. The results show a promising similarity of the simulations and the experiments with a spray ignition likelihood distribution that has a maximum near the MMD (Mass Median Diameter).

Copyright © 2010 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In