CAJ | 학술논문

为了模拟霍尔推力器推力、比冲等工作性能，采用粒子网格单元与蒙特卡洛相结合（PIC／ MCC）方法，建立了霍尔推力器二维轴对称模型。模型中电子和离子均采用粒子描述，中性原子为背景气体，自洽电势通过求解泊松方程获得。跟踪推力器出口处离开的离子数量、轴向速度等信息，通过统计计算得到推力器的推力、比冲。以 LHT100推力器为研究对象，针对不同的工作参数（阳极流量在4．6～5．4 mg／ s，阳极电压在280～320 V 之间）共进行了9种工况数值模拟，并进行试验对比验证，模拟结果与试验测试结果均较好吻合，最大误差小于10％。
위료모의곽이추력기추력、비충등공작성능，채용입자망격단원여몽특잡락상결합（PIC／ MCC）방법，건립료곽이추력기이유축대칭모형。모형중전자화리자균채용입자묘술，중성원자위배경기체，자흡전세통과구해박송방정획득。근종추력기출구처리개적리자수량、축향속도등신식，통과통계계산득도추력기적추력、비충。이 LHT100추력기위연구대상，침대불동적공작삼수（양겁류량재4．6～5．4 mg／ s，양겁전압재280～320 V 지간）공진행료9충공황수치모의，병진행시험대비험증，모의결과여시험측시결과균교호문합，최대오차소우10％。
To simulate the thrust and specific impulse of a Hall thruster, a two?dimensional axisymmetric model is developed for the discharge channel of the thruster, the model is based on a particle description of electrons and ionic components, the neutral atoms are set as background, and the self?consistent electric potential is calculated from Poisson equation. In the process of track?ing, the number and energy of ions ejecting from exit plane were recorded, then the thrust and specific impulse were obtained by statistical calculation. Treat LHT100 thruster as research object, according to different working parameters (anode flow rate is 4.6~5.4 mg/ s, anode voltage is 280~320 V), numerical simulation were conducted in 9 kinds of conditions, respectively. By experi?ment validation, the simulation results and experiment results are consistent, the maximum error is no more than 10%.