ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Study of Water Drop Motion Characteristics on Heating Surface
Received date: 2013-07-29
Revised date: 2013-08-27
Online published: 2013-08-30
To study the water drop motion characteristics on heating surface, a method is proposed to calculate the geometric parameters, force and motion process of water drop on the heating surface. Experiments are conducted to calibrate the correlation coefficients used in the calculation of surface retention force, the viscous drag and the aerodynamic force. The critical diameter of drop movement is given for different wind speeds. Water drop movement on heating surface is investigated by experimental and computational approaches. The results show that the dimensionless surface retention force keeps constant and the viscous drag is related to the drop velocity and width. The aerodynamic force under the action of outside airflow can be calculated by the correction of sphere drag formula. By applying correlation coefficient obtained in the experiment to the numerical model, water drop movement on heating surface can be predicted. The computation results fit well with the test results. It is concluded that the present method can simulate the time history of water drop size and location on the heating surface accurately.
MENG Fanxin , ZHU Guangya , LI Rongjia , ZHANG Dalin . Study of Water Drop Motion Characteristics on Heating Surface[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2014 , 35(5) : 1292 -1301 . DOI: 10.7527/S1000-6893.2013.0376
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