Size distribution effects in heterogeneous shock tube burntime experiments

Patrick Lynch, Herman Krier, Nick G Glumac

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

Abstract

An experimental study of size distribution effects on burn time measurements using optical diagnostics was conducted in the UIUC heterogeneous shock tube with aluminum powder distributions between 3.1 and 11.2 μm in water vapor. Mixtures were created in order to test distributions between these limits. Mass averaging (instead of number averaging) of particle diameter is necessary in order to observe increasing burn times with diameter. Additionally, the number of particles observed in the collection volume of optics precludes number averaging based on probability of observation. In water vapor, burn times increase with pressure, and there is no indication that this observation is caused by a size distribution effect. Finally, low diameter dependences on burn time cannot be attributed to broad overlapping size distributions.

Original languageEnglish (US)
Title of host publication45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit
StatePublished - 2009
Event45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit - Denver, CO, United States
Duration: Aug 2 2009Aug 5 2009

Other

Other45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit
CountryUnited States
CityDenver, CO
Period8/2/098/5/09

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ASJC Scopus subject areas

  • Aerospace Engineering
  • Control and Systems Engineering
  • Space and Planetary Science
  • Energy(all)
  • Electrical and Electronic Engineering
  • Mechanical Engineering

Cite this

Lynch, P., Krier, H., & Glumac, N. G. (2009). Size distribution effects in heterogeneous shock tube burntime experiments. In 45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit