位相ドップラー法を用いた滴挙動の計測と噴霧流の構造に関する研究

概要

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Experimental investigations were made on the fluid dynamic behaviour of the droplets in a hollow-cone type steady spray flow accompanied by the coaxial free air jet, especially paying attention to the interrelation between size and motion of the droplets. For this purpose, simultaneous measurements were carried out of velocity and diameter of droplets using phase-Doppler technique. Droplet velocity and size are well correlated and the bigger droplets has the higher axial velocity, in the all measuring points. And, the bigger is the droplet size, axial velocity of the droplets of same class of size varies the more widely. In addition. Size distribution measurements indicate that the small size droplets are taken selectively away from the spray sheath due to axial air stream, and that big size droplets persist in remaining in the sheath. Then, it seems that selection of droplets according to size proceeds more and more while spray flows downstream.
一般社団法人日本機械学会の論文
1993-11-25