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等离子体对低气压超音速氦气流场作用的实验研究

Effect of plasma on low pressure supersonic helium flow field
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摘要 采用直流驱动等离子体激励器并通过气流场的碘线表征法研究了边界表面放电等离子体对低气压超音速氦气流场的作用。实验结果表明,边界表面放电等离子体的阴极区对以超音速流动的氦气的控制作用在符合实际工程条件的低气压下是有效果的;等离子体激励器的驱动电压越高,气流场的流动控制效果越好;定性观察表明激励器的阴极板的面积越大,实际作用区域越大,相应的实际控制效果越好。 Influence of a boundary surface discharge plasma on the low-pressure supersonic helium flow field is investigated with a DC-driven discharge plasma actuator and its effect on altering the gas flow field by means of the molecular tagging smoke wire. It is found that the cathode region of the boundary surface discharge plasma plays a pivotal role on the control of supersonic flow of helium on the actual conditions. In addition, the higher the driven voltage of plasma actuator, the better the control of airflow field. With the increase of the driven voltage, the discharge area on cathode region will be enlarged, correspondingly the actual working area is enlarged, so that the controlling effect on airflow field is more appreciable.
出处 《核聚变与等离子体物理》 CAS CSCD 北大核心 2016年第4期368-373,共6页 Nuclear Fusion and Plasma Physics
基金 国家自然科学基金(61205139)
关键词 直流驱动放电 碘线法 表面放电 气流场 DC-driven discharge Molecular tagging smoke wire Surface discharge Gas flow field
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