TY - JOUR
T1 - Experimental study on the effect of surface conditions on evaporation of sprayed liquid droplet
AU - Negeed, El Sayed R.
AU - Ishihara, N.
AU - Tagashira, K.
AU - Hidaka, S.
AU - Kohno, M.
AU - Takata, Y.
N1 - Funding Information:
The authors wish to express their sincere deep gratitude and deepest appreciation to Prof. Dr. A. H. Mariy, Egyptian Atomic Energy Authority, for his great efforts and continuous help. This work was supported by Department of Mechanical Engineering Science, Faculty of Engineering, Kyushu University, Fukuoka, Japan and the Reactors Dept., Nuclear Research Center, Atomic Energy Authority, Cairo, Egypt .
PY - 2010/12
Y1 - 2010/12
N2 - The present study investigates experimentally the effects of thermal properties of the hot surface and droplet characteristics on the droplet evaporation. Cylindrical blocks made of Stainless Steel, Aluminum and Brass with different degrees of surface roughness were used. The droplet diameter and velocity were controlled independently. The behavior of droplet during the collision with hot surface was observed with a high-speed camera. The results presented the effect of the thermal properties of the hot surface, droplet Weber number, droplet velocity, droplet size, hot surface conditions; surface superheat and degree of surface roughness on the solid-liquid contact time and the maximum spread of droplet over the surface. Empirical correlations have been deduced describing the relationship between the hydrodynamic characteristics of an individual droplet impinging on a heated surface and concealing the affecting parameters in such process. Also, the comparison between the current results and the results due to others investigators shows good agreement in which the difference between them ranged from 5% to 25%.
AB - The present study investigates experimentally the effects of thermal properties of the hot surface and droplet characteristics on the droplet evaporation. Cylindrical blocks made of Stainless Steel, Aluminum and Brass with different degrees of surface roughness were used. The droplet diameter and velocity were controlled independently. The behavior of droplet during the collision with hot surface was observed with a high-speed camera. The results presented the effect of the thermal properties of the hot surface, droplet Weber number, droplet velocity, droplet size, hot surface conditions; surface superheat and degree of surface roughness on the solid-liquid contact time and the maximum spread of droplet over the surface. Empirical correlations have been deduced describing the relationship between the hydrodynamic characteristics of an individual droplet impinging on a heated surface and concealing the affecting parameters in such process. Also, the comparison between the current results and the results due to others investigators shows good agreement in which the difference between them ranged from 5% to 25%.
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U2 - 10.1016/j.ijthermalsci.2010.08.008
DO - 10.1016/j.ijthermalsci.2010.08.008
M3 - Article
AN - SCOPUS:77957853866
SN - 1290-0729
VL - 49
SP - 2250
EP - 2271
JO - International Journal of Thermal Sciences
JF - International Journal of Thermal Sciences
IS - 12
ER -