Measurement of unstationary size-distribution of submicron droplets in rarefaction-wave condensation by laser scattering
Abstract
The laser-scattering method was employed to obtain the instantaneous size distribution of condensate droplets in the process of gaseous nucleation and condensation, using rarefaction-wave flows of a shock tube. The intensity of light scatted by the condensate droplets was measured at a number of angles (circumferentially) by photomultipliers with a microlens/optical-fiber system, and the data were stored in a digital memory bank with high-speed data processing. From the stored output of scattered light intensity, the time variation of the size distribution of the condensate was numerically calculated, providing quantitative information on the rate process of nucleation and condensation.
- Publication:
-
IN: Optical methods in dynamics of fluids and solids; Proceedings of the International Symposium
- Pub Date:
- 1985
- Bibcode:
- 1985omdf.proc..121I
- Keywords:
-
- Drop Size;
- Gas Dynamics;
- Light Scattering;
- Optical Measurement;
- Particle Size Distribution;
- Condensates;
- Elastic Waves;
- Laser Applications;
- Luminous Intensity;
- Shock Tubes;
- Fluid Mechanics and Heat Transfer