Optical measurement and numerical simulation of spray combustion

Abstract

To elucidate the detailed combustion mechanism of spray flames, experimental and numerical studies were conducted. In the experiment, simultaneous time-series measurements of OH chemiluminescence, CH-band emission, and Mie scattering from droplets by using a Cassegrain optics, spray image illuminated by laser light sheet, the droplet diameter and velocity measured by using PDA were applied to a premixed spray flame of kerosene. In addition, numerical calculations were conducted on combustion processes of n-decane spray entering gaseous flat-flame stabilized in laminar counter flow configuration. With these experimental and numerical results, time evolution of burning processes of fuel spray was discussed in detail.