On the collision behaviors of a diesel drop impinging on a hot surface

Rong Horng Chen, Sheng Lin Chiu, Ta Hui Lin

Research output: Contribution to journalArticle

33 Citations (Scopus)


The collision of diesel oil drops ranging from 500 μm to 950 μm on an inclined hot stainless steel surface was experimentally observed for the purpose of discovering the contrast between the collision behaviors of diesel drops and those of other liquids. The experimental results may improve the understanding of fuel drops impact characteristics. Results showed that the critical Weber number for disintegration was very different from the criteria presented by previous researchers for other liquids. The resident time on the hot surface was found to be independent of the impinging angle and normal impinging velocity, and about 30% higher than the free oscillation prediction. An empirical correlation of non-dimensional resident time was built up as a function of the normal Weber number alone. Also, an approximation based on a simple energy balance was presented for the maximum spreading diameter. These two approximations were in a good agreement with the experimental data.

Original languageEnglish
Pages (from-to)587-595
Number of pages9
JournalExperimental Thermal and Fluid Science
Issue number2
Publication statusPublished - 2007 Nov 1

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Nuclear Energy and Engineering
  • Aerospace Engineering
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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