Experimental and simulation investigations on the interplay of discharge and He flow channel are performed by using schlieren photograph system and 3D species transport simulation model, respectively. The buoyancy force and electrostatic force model is built in the computation model. The results show that, the discharge bestows He flow a net forward momentum, which is simulated by adding the electrostatic force model. The He flow channel tends to bend upward at small flow rate, and the curvature of He flow channel is decreased with the increment of He flow rate, which is in good agreement with the experimental observations. The profile of He APPJ in the ambient depends on the conical interface between He and air. The He mole fraction along the symmetry axis decreases as parabola, and decreases slowly with the increment of He flow rate. The critical He mole fraction at the head of APPJ for sustaining APPJ propagation is about 99%.
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机译：分别使用schlieren照片系统和3D物种迁移模拟模型对放电和He流动通道之间的相互作用进行了实验和仿真研究。计算模型建立了浮力和静电力模型。结果表明，通过赋予静电力模型，可以使He产生净正向动量。 He流道在小流量下倾向于向上弯曲，He流道的曲率随着He流量的增加而减小，这与实验观察结果吻合良好。 He APPJ在环境中的分布取决于He与空气之间的锥形界面。沿对称轴的He摩尔分数随抛物线而减小，并随着He流量的增加而缓慢减小。维持APPJ传播的APPJ头部的关键He摩尔分数约为99％。
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