Splashing Characteristics of Monodisperse Sprays with Significant Viscosity Differences Impacting a Flat Surface
- Splashing Characteristics of Monodisperse Sprays with Significant Viscosity Differences Impacting a Flat Surface
- 이민욱; In H. Hwang; Dong J. Lee; Sam S. Yoon; Ho Y. Kim; Jung J. Park; Scott C. James
- Issue Date
- The 6th Asia-Pacific Drying Conference
- Drop impingement and splashing as a function of viscosity and, to a lesser extent, temperature are examined here. The working fluid is a mixture of water and glycerin with relative mass percentages varying from 0 to 100%, which spans a viscosity range of three orders of magnitude. First, a criterion that separates “on” and “off” for splashing as a function of glycerin percentage is expressed in terms of both Weber and Reynolds numbers and its highly nonlinear behavior is a function of the change in fluid viscosity. Next, the complex splashing characteristics of a rather simple monodisperse spray injected at a pressure of 2 bars onto a flat, 2-mm-diameter, aluminum cylindrical rod are examined. Spatial variations in the fraction of splashed liquid, Sauter Mean Diameter, splashed droplet size distrbution, and splash volume fraction as a function of radial distance for these mixtures are reported.
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