Measurements of Plasma Flow Velocity in DC Plasma Jets Using Perpendicular and Parallel Mach Probes
Measurements of Plasma Flow Velocity in DC Plasma Jets Using Perpendicular and Parallel Mach Probes
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使用垂直和平行马赫探头测量直流等离子体射流中的等离子体流速
DOI：
10.1143/jjap.34.4217
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发表时间：
1995
影响因子：
1.5
通讯作者：
K. Chung
中科院分区：
文献类型：
--
作者：
K. Chung;S. Hong;K. Chung
研制了一种旋转电探针系统，用于测量常压直流等离子体炬喷射等离子体的参数。四种不同类型的非磁化单探头被用于高功率通量等离子体的诊断——两个探头相互垂直（“垂直马赫探头”），其余两个探头相互相反（“平行马赫探头”）——沿着等离子体火焰的轴向和径向测量等离子体的流速和密度。在15kw等离子炬喷嘴出口附近，等离子体流速、密度和电子温度分别为~ 910 m/s、4×1013 cm-3和4.7 eV。
A rotating electric probe system has been developed to measure the parameters of spray plasma jets from a dc plasma torch at atmospheric pressure. Four different types of unmagnetized single probes have been used for the diagnostics of high power-flux plasma–two probes are mutually perpendicular (`perpendicular mach probe') and the remaining two are oppositely directed to each other (`parallel mach probe')–to measure the plasma flow velocity and density along the axial and radial directions of the plasma flame. Near the nozzle exit of a 15 kW plasma torch, plasma flow velocity, density and electron temperature are measured as ∼910 m/s, 4×1013 cm-3 and 4.7 eV, respectively.