Open AccessПространственное распределение температуры газа в воздушной плазменной струе тлеющего микроразряда постоянного тока
Author(s) -
О.М. Степанова,
А.В. Казак,
А.М. Астафьев,
М.Э. Пинчук,
Л.В. Симончик
Publication year - 2018
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2018.18.46615.17210
Subject(s) - schlieren , nozzle , jet (fluid) , thermocouple , plume , plasma , materials science , optics , analytical chemistry (journal) , mechanics , chemistry , meteorology , physics , thermodynamics , composite material , chromatography , quantum mechanics
The spatial distribution of gas temperature in air plasma jet of dc glow microdischarge has been determined. The temperature field was measured by a thermocouple probe and compared to schlieren images. The jet can be separated in the radial direction into three characteristic regions with clearly pronounced boundaries. The central region represents a narrow hot zone corresponding to the visible plasma plume, in which the gas temperature varies from 50 to 200°C depending on the air flow rate and distance from the anode. This zone is surrounded by a warm “coat” of ~1-cm diameter and a temperature within 30–50°C. The outer region represented ambient air at room temperature. The zone of temperatures above 50°C did not extend to a distance above 3 cm from the output nozzle of the discharge cell.