본 연구에서는 분무된 입자들간의 운동 및 열역학적인 상호작용에 의한 저항 계수(drag coefficient)및 액적의 증발상태를 실험적으로 조사하였으며, 실험결과를 단일(single) 입자이면서 정상상태(steady state)를 대표하는 기존의 표준저항계수 (standard drag coefficient)와 증발상태를 해석적으로 비교 검토하였다.
The present study investigated dynamically and thermally interacting droplets in a closely spaced tandem array. By measuring the velocity and diameter of the droplet traveling along the isothermal vertical plate drag coefficients and vaporization rates of droplets at certain location were obtained. During the experiment initial droplet spacings were less than 5, and initial droplet diameters were ranged between 280 .mu.m and 700 .mu.m Drag coefficients on closely spaced droplets were placed far below the standard drag coefficient, for which it was caused turbulence induced from aforelocating droplets also narrow spaces among droplets restricted heat transfer to droplets from hot gas flow. In addition evaporated vapor entrapted between droplets was major factor in delaying droplet vaporization. With the experimental results the drag coefficient was correlated with respect to Reynolds number for the droplet as follows : $c_{d}$ =2.4/red.$^{0.37}$7/
