화학공학소재연구정보센터
Atomization and Sprays, Vol.5, No.3, 287-304, 1995
TURBULENT SPRAYS IN STAGNATION FLOWS
An experimental study of turbulent sprays of methanol impinging on a wall is reported. The turbulence is generated by a grid in the duct carrying the droplets in an air stream. Measurements of droplet diameter and of two components of droplet velocity are made with a phase Doppler particle analyzer (PDPA). Small and large droplets are observed to behave differently. By associating the velocity of the smallest droplets with that of the gas, some aspects of the statistics of the relative velocity between the gas and droplets of various sizes are obtained. Comparison with theoretical estimates of mean and fluctuating droplet velocities helps reveal how different-sized droplets respond differently to turbulence.