Experimental Procedure

• Obtain the water spray from a vertically mounted air-blast atomizer.


• With properly aligned optical elements, obtain a thin LASER sheet.
  • It is vertical and passes through spray center for cone angle.
  • It is horizontal and passes through the spray at a distance sufficiently away from the primary breakup zone.


• Set up the CCD camera and obtain images of spray;
  • Keep camera parallel to the plane of LASER sheet for cone angle.
  • Keep camera at an angle to the LASER sheet for patternation.


• Analyze individual images and obtain averaged data for cone angle, SPI, and SUI.


• Perform experiments for different gas to liquid mass ratio (GLR=).

Steps in image analysis