Vaporization of synthetic fuels. Final report. [Thesis]

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The problem of transient droplet vaporization in a hot convective environment is examined. The main objective of the present study is to develop an algorithm for the droplet vaporization which is simple enough to be feasibly incorporated into a complete spray combustion analysis and yet will also account for the important physics such as liquid-phase internal circulation, unsteady droplet heating and axisymmetric gas-phase convection. A simplified liquid-phase model has been obtained based on the assumption of the existence of a Hill's spherical vortex inside the droplet together with some approximations made in the governing diffusion equation. The use of the ... continued below

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Pages: 335

Creation Information

Sirignano, W.A.; Yao, S.C.; Tong, A.Y. & Talley, D. January 1, 1983.

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Description

The problem of transient droplet vaporization in a hot convective environment is examined. The main objective of the present study is to develop an algorithm for the droplet vaporization which is simple enough to be feasibly incorporated into a complete spray combustion analysis and yet will also account for the important physics such as liquid-phase internal circulation, unsteady droplet heating and axisymmetric gas-phase convection. A simplified liquid-phase model has been obtained based on the assumption of the existence of a Hill's spherical vortex inside the droplet together with some approximations made in the governing diffusion equation. The use of the simplified model in a spray situation has also been examined. It has been found that droplet heating and vaporization are essentially unsteady and droplet temperature is nonuniform for a significant portion of its lifetime. It has also been found that the droplet vaporization characteristic can be quite sensitive to the particular liquid-phase and gas-phase models. The results of the various models are compared with the existing experimental data. Due to large scattering in the experimental measurements, particularly the droplet diameter, no definite conclusion can be drawn based on the experimental data. Finally, certain research problems which are related to the present study are suggested for future studies.

Physical Description

Pages: 335

Notes

NTIS, PC A15/MF A01; 1.

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  • Other Information: Portions are illegible in microfiche products. Original copy available until stock is exhausted

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  • Other: DE84006556
  • Report No.: DOE/PC/40277-T1
  • Grant Number: FG22-81PC40277
  • DOI: 10.2172/5341085 | External Link
  • Office of Scientific & Technical Information Report Number: 5341085
  • Archival Resource Key: ark:/67531/metadc1071739

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • January 1, 1983

Added to The UNT Digital Library

  • Feb. 4, 2018, 10:51 a.m.

Description Last Updated

  • March 27, 2018, 12:21 p.m.

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Sirignano, W.A.; Yao, S.C.; Tong, A.Y. & Talley, D. Vaporization of synthetic fuels. Final report. [Thesis], report, January 1, 1983; United States. (digital.library.unt.edu/ark:/67531/metadc1071739/: accessed October 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.