利用空腔针-板放电装置,研究了双空腔电极的泰勒锥形貌,并分析了影响雾化效果的因素.通过软件处理高速相机拍摄的图像,研究了不同电压和分离角度下的泰勒锥形貌、锥长和锥角等参数.结果表明:可以通过弯曲处理来减弱双空腔之间的放电抑制作用.在同等长度下,单空腔电极与双空腔电极相比,双空腔电极的雾化效果与泰勒锥形貌都要更好,且在不同的双空腔电极的分离角下,当分离角为60°时雾化效果最好.故双空腔电极分离角为60°时可作为优化电极.电压为25 kV时双空腔电极形成的泰勒锥形貌最佳.
Taylor cone shape of double cavity electrode was studied by cavity needle-plate discharge device, and the factors affecting atomization effect were analyzed.The parameters of Taylor cone shape, cone length and cone angle at different voltages and separation angles were studied by processing the images taken by high speed camera with saftware.The results show that the discharge inhibition of double cavity can be weakened by bending processing between discharge inhibition. Under the same length, compared with that of single cavity electrode,the atomization effect and Taylor cone of double cavity electrodes is better. And regarding to the separation angle of double cavity electrode, when the separation angle is 60°, the atomizing effect is the best.Therefore, when the separation angle of the double-cavity electrode is 60°, it can be used as the optimal electrode.The best Taylor cone shape is obtained when the voltage is 25 kV.
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