Quantitative measurements of shot-to-shot variation in diesel sprays

A. B. Swantek, D. J. Duke, C. F. Powell, A. L. Kastengren

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

Abstract

Recent advances in x-ray spray diagnostics at Argonne National Laboratory’s Advanced Photon Source have enabled absorption measurements of individual spray events. A focused x-ray beam (5x6 µm) enables collection of data along a single line of sight in the flow field and these measurements have allowed the calculation of quantitative, shot-to-shot statistics for the projected mass of fuel sprays. Raster scanning though the spray generates a two-dimensional field of data, which is a path integrated representation of a three-dimensional flow. The shot-to-shot variation over repeated spray is evaluated in terms of the standard deviation in mass-based units. A two-dimensional map of the standard deviation as a function of time reveals the position and time dependence of the fluctuating field. Variations in the standard deviation are explored across variations in nozzle diameter, injection pressure, and ambient pressure.

Original languageEnglish
Title of host publicationICLASS 2015 - 13th International Conference on Liquid Atomization and Spray Systems
Publication statusPublished - 2015
Externally publishedYes
EventInternational Conference on Liquid Atomization and Spray Systems 2015 - Tainan, Taiwan
Duration: 23 Aug 201527 Aug 2015
Conference number: 13th

Conference

ConferenceInternational Conference on Liquid Atomization and Spray Systems 2015
Abbreviated titleICLASS 2015
CountryTaiwan
CityTainan
Period23/08/1527/08/15

Keywords

  • Measurement
  • Quantitative
  • Spray
  • Stochastics

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