Particulate and droplet diagnostics in spray combustion. Annual report

Technical Report · Sun Sep 01 04:00:00 EDT 1991

OSTI ID:10102720

Semerjian, H G; Presser, C

During the past year, significant progress was made in four different areas: (a) measurement of droplet velocity distributions and time of arrival, (b) time-resolved measurement of droplet size with the ESPR technique, (c) study of the structure of methanol/dodecanol spray flames, and (d) comparison of droplet sizing techniques. Droplet velocity distributions and time of arrival were obtained with a single-component laser velocimetry system to obtain detailed information on the transport of individual droplets. The polarization ratio technique is being developed to obtain time resolved droplet sizes and number density in nonburning sprays. Droplet size and velocity measurements were obtained with phase/Doppler interferometry for different mixtures of methanol and dodecanol to ascertain evidence of the occurrence of microexplosions in this two-component fueled spray flame. Finally, a comparative analysis of droplet-size and number density was carried out in a pressure-atomized spray using three droplet sizing techniques (i.e., ESPR, PDI and LID).

• Research Organization: National Inst. of Standards and Technology, Gaithersburg, MD (United States). Process Measurements Div.
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AI01-86CE90213
• OSTI ID: 10102720
• Report Number(s): DOE/CE/90213--T7; ON: DE93003631
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800
ALCOHOLS
ATOMIZATION
COMBUSTION
COMBUSTION, PYROLYSIS, AND HIGH-TEMPERATURE CHEMISTRY
DROPLETS
FLAMES
INTERFEROMETRY
METHANOL
PROGRESS REPORT
RESEARCH PROGRAMS
SIZE
SPRAYS
VELOCITY