Development and implementation of advanced diagnostic techniques
Abstract
Two techniques were identified which offer great potential in the measurement of sprays. The first is referred to as IMAX, and it consists of a nonintrusive pulse height analyzer. The second is referred to as Visibility/Intensity (V/I) and it performs a size measurement by examining the visibility and the pedestal intensity that the IMAX technique provides a larger dynamic range and higher accuracy than V/I. It also shows that the two-color IMAX concept provides a higher S/N primarily because of the high efficiency in spectrally separating the two signals. The size distribution of two kinds of sprays are reported. The first spray was produced by a Berglund-Liu droplet generator with dispersion air. The second spray was produced by a pressure nozzle.
- Publication:
-
Combustion Fundamentals Research
- Pub Date:
- April 1984
- Bibcode:
- 1984cfr..nasa...23H
- Keywords:
-
- Drop Size;
- Fuel Sprays;
- Size Determination;
- Velocity Measurement;
- Laser Doppler Velocimeters;
- Pulse Amplitude;
- Resolution;
- Size Distribution;
- Visibility;
- Instrumentation and Photography