Measurements and designs related to electrical spray modification in a T-56 combustor
By: by Zeev Shavit
Contributors: Naval Postgraduate School (U.S.). Space Systems Academic Group
Publisher: Naval Postgraduate School; Available from National Technical Information Service
Published: 1985
Place of publication: Monterey, Calif; Springfield, Va
Language: eng
Number of pages: 54
Subjects: FUEL SPRAYS; LIGHT SCATTERING
Other titles: NPS-67-85-012CR-A.
Description: A new optical technique for measuring Sauter Mean Diameter changes of a fuel spray under      an electrostatic field was checked, calibrated, and implemented. The optical technique is      based on measuring scattered light at two angles using a variable focal length apparatus.      Special attention was given to improving the electrical control loop parameters in order to      minimize measurement errors. In order to measure more realistically the effects of the      electrostatic probe inside a gas turbine combustor, a pressure chamber was added to the      outlet of the present combustion simulation device. Hot tests were carried out with diesel fuel      DF-2. Pressure chamber, combustor's temperatures, fuel, and air mass flow rates, were      recorded together with the voltage applied at the electrode. Results of the cold tests with the      new optical device show a Sauter Mean Diameter of 50.0 micron at fuel pressure (DF-2) of      100 psi, 51.7 micron at 125 psi and 47.8 micron at 80 psi. The device could not resolve      changes while the high voltage field was exerted. Combustion temperatures with the pressure      chamber are presented. Preliminary designs for improvements of the various devices are also      described. Keywords: Particle measurement; Sauter mean diameter, T56 jet engine      combustors; Electrostatic atomization; Alternative fuels; Optical radiometers.
Notes: Title from cover.

"NPS-67-85-012CR."

"December 1985."

AD A164 292.

Includes bibliographical references (p. 51-52)

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