CAJ | 학술논문

为满足高超声速磁流体流动控制实验研究的需要，采用同步高压脉冲电离和直流维持放电技术，研制了一种适用于高超声速激波风洞实验系统的高压脉冲直流等离子体电源。首先进行了静止低气压条件下的放电特性研究。通过高速电荷耦合器件（chargecoupleddevice，CCD）可以发现：初始时刻直流放电强烈，放电电流达到16A；随着电容储存能量的消耗，放电电流逐渐减小，放电强度缓慢减弱，直至完全消失，放电形状近似为一圆形。然后进行了高超声速气流中无磁场激励、磁流体（magnetohydrodynamics，MHD）逆气流减速激励和MHD顺气流加速激励条件下的放电特性研究，提出了用于高超声速激波风洞实验系统的MHD激励强度判定标准。研究结果表明：高超声速气流中施加磁场能够起到稳弧的作用，有磁场激励条件下的电源能量消耗约是无磁场激励条件下的3-4倍；MHD加速激励同MHD减速激励的功率相等，而MHD加速激励的电源能量消耗高于MHD减速激励的电源能量消耗。
위만족고초성속자류체류동공제실험연구적수요，채용동보고압맥충전리화직류유지방전기술，연제료일충괄용우고초성속격파풍동실험계통적고압맥충직류등리자체전원。수선진행료정지저기압조건하적방전특성연구。통과고속전하우합기건（chargecoupleddevice，CCD）가이발현：초시시각직류방전강렬，방전전류체도16A；수착전용저존능량적소모，방전전류축점감소，방전강도완만감약，직지완전소실，방전형상근사위일원형。연후진행료고초성속기류중무자장격려、자류체（magnetohydrodynamics，MHD）역기류감속격려화MHD순기류가속격려조건하적방전특성연구，제출료용우고초성속격파풍동실험계통적MHD격려강도판정표준。연구결과표명：고초성속기류중시가자장능구기도은호적작용，유자장격려조건하적전원능량소모약시무자장격려조건하적3-4배；MHD가속격려동MHD감속격려적공솔상등，이MHD가속격려적전원능량소모고우MHD감속격려적전원능량소모。
The high voltage pulsed plus DC plasma source suitable for hypersonic shock wave wind tunnel was developed which could meet the needs of hypersonic MHD flow control experiment. This source adopted synchronous high voltage pulsed discharge and DC-maintained discharge technology. Firstly, we experimentally investigated the plasma discharging characteristics in static low pressure flow, and found that discharging was acuteness at first and current could get 16 A. The current got small and the discharging got week with energy consuming. The discharging area was approximate rotundity. Then, we experimentally investigated the plasma discharging characteristic in hypersonic flow, MHD accelerating actuation and MHD decelerating actuation in hypersonic shock wave wind tunnel, and brought forward a determinant standard of MHD actuation intensity for hypersonic shock wave wind tunnel. The results reveal that the magnetic field can stabilize arc, the energy consuming for plasma source in the presence of magnetic field is three to four times of that in the absence of magnetic field, and the power is approximately equal to that of MHD accelerating actuation and.MHD decelerating actuation but the energy consumption is higher than MHD accelerating actuation.