Gas-Discharge Anemometer for the Investigation of Flow Dynamics in Rarefied Gas Media
Gas-Discharge Anemometer for the Investigation of Flow Dynamics in Rarefied Gas Media
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用于研究稀薄气体介质中流动动力学的气体放电风速计
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
P. M. Tyuryukanov
中科院分区：
文献类型：
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作者：
E. Evlanov;B. Zubkov;D. Nenarokov;V. Linkin;M. Zavjalov;P. M. Tyuryukanov
设计了一种气体放电风速计，用于研究风洞中的气体流动动力学，以及实验和空间气象学。风速计允许人们同时测量气体流动速度矢量的大小和方向以及流动中的气体压力。该仪器由气体放电室、散射离子分析仪、电源单元和测量单元组成。风速计重量不超过0.1 kg，功耗不超过0.2 W。该仪器在一个风洞中进行了初步测试，该风洞特别模拟了火星大气边界层的条件，并产生了定向气体（空气或二氧化碳）流，其速度可以从0.5到50米/秒变化，压力从0.3到1.3千帕，温度从-120到+20°C。风速计灵敏度不低于100 mV/(m/s)。提出了根据测量的离子电流分布计算气体流速的方法。
A gas-discharge anemometer is designed for investigating the gas-flow dynamics in wind tunnels, and in experimental and space meteorology. The anemometer allows one to measure simultaneously the magnitude and direction of the gas-flow velocity vector and the gas pressure in the flow. The instrument consists of a gas-discharge chamber, an analyzer of scattered ions, a power supply unit, and a measuring unit. The anemometer weight does not exceed 0.1 kg, and the power consumption does not exceed 0.2 W. The instrument was put through preliminary tests in a wind tunnel that simulated, in particular, the conditions in the boundary layer of the Martian atmosphere and produced a directed gas (air or CO2) flow whose velocity could be varied from 0.5 to 50 m/s at pressures from 0.3 to 1.3 kPa and temperatures from –120 to +20°C. The anemometer sensitivity is no worse than 100 mV/(m/s). The method of calculating the gas-flow velocity on the basis of the measured ion-current distributions is developed.