等离子体DBD激励器可以在大气压或高于大气压的条件下产生等离子体。激励器的放电特性作为等离子体密度的决定因素,控制着等离子体助燃的作用及其效果。笔者在大气压条件下对不同电极距离、介质层厚度、激励器电极布局下的等离子体气体放电特性进行了实验研究。实验结果表明:可以通过减小介质层厚度、在合适范围内减小电极间距、优化激励器电极布局来提高电场场强、等离子体助然的效果。
Plasma DBD actuator can produce plasma in latom or above it. Electrical characteristics of actuator discharge, which are the decisive factors of plasma density, control the actions and effects of plasma assist combustion. This article conducts experiments on the characteristics of plasma gas discharge with different electrode distance, dielectric thickness and actuator electrode arrangement under atmosphere. The experiment results show that we can raise electric-field strength, enhance the effect of plasma assisted combustion by reducing dielectric thickness, reducing electrode distance in suitable range and optimizing actuator electrode arrangement.