Discharge coefficient of internal mixing twin-fluid atomizers. Flow rate prediction of turbulent two-phase jet through an orifice.:FLOW RATE PREDICTION OF TURBULENT TWO-PHASE JET THROUGH AN ORIFICE

概要

論文の詳細を見る
The internal mixing twin-fluid atomizer, used in many industries, is a sort of twin-fluid atomizer which disintegrates liquid in the atmosphere after mixing liquid and gas within a mixing chamber. However, few investigations of the atomizer having a throat or an orifice port and a mixing chamber have been reported. In this paper, the discharge coefficient of this type of atomizer is investigted experimentally. The gas-liquid two-phase mixture was treated as a compressible and homogeneous fluid, and the critical pressure Pc and the acoustic velocity were taken into consideration to determine the discharge coefficient. Two empirical formulas of the discharge coefficient C0 were obtained for the gas-liquid two-phase jet, as follows: (a) Pc<1 Kg/cm2 (subsonic region) C0=0.38×10-3m0.466(D2/D1)-0.964Re0.983(μl/μw)0.984 (b) Pc>Kg/cm2 (supersonic region) C0=0.593×m0.063(D2/D1)-0.048RE0.078(μl/μw)0.115Here, the experimental region is Wl=33-180 kg/hr, m=0.001-0.23.
公益社団法人化学工学会の論文