Title: Calculation of Electric Field and Study of Discharge on Water Droplets on the Hydrophobic Surface
Abstract:This paper uses an ANSYS finite element analysis software to compute the electric field distributions on the hydrophobic surface with no-droplet,one-droplet and multi-droplets in non-uniform electric ...This paper uses an ANSYS finite element analysis software to compute the electric field distributions on the hydrophobic surface with no-droplet,one-droplet and multi-droplets in non-uniform electric field(needle-board electrodes).According to the calculation results,it can be found that the electric field generates distortion around the droplet,and the field strength has been formed in the joint of liquid,solid and gas,and the distortion is more severe when droplet lies in the stronger electric field.Furthermore,the maximum electric field intensity when there are water droplets on the hydrophobic surface is 2.05~1.28 times when there is no water droplets on sample surface in the non-uniform electric field.On the purpose of making further study on results the electric field distortion,this paper also designs a simulating test on the model sample to study the discharge process of discrete water droplets on the hydrophobic surface in the non-uniform electric field.The results show that the droplets near needle electrode with highest field intensity on hydrophobic surface produce corona at first,and the corona,arc until breakdown also appear to be more apparent and intense than other position.Moreover,different from hydrophilic surface,pollution flashover discharge on hydrophobic surface in the existence of water droplets appears to have conspicuous extinguishing and rekindling phenomena,this is propitious to the enhancement of flashover voltage.Besides,flashover voltage under line form water droplets arrangement is lower than that under other arrangement forms,and that the flashover voltage is related with droplet volume and conductivity under the same droplets arrangement.Read More
Publication Year: 2006
Publication Date: 2006-01-01
Language: en
Type: article
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Cited By Count: 2
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