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Measurements of air plasma/ablator interactions in an inductively coupled plasma torch
Journal article   Peer reviewed

Measurements of air plasma/ablator interactions in an inductively coupled plasma torch

M E MacDonald, Carolyn Jacobs, C O Laux, F Zander and R G Morgan
Journal of Thermophysics and Heat Transfer, Vol.29(1), pp.12-23
2015
DOI: https://doi.org/10.2514/1.T4402
url
https://doi.org/10.2514/1.T4402View
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Abstract

Studies of the ultraviolet and visible emission from an atmospheric pressure air plasma and its interaction with two carbon-based ablative materials were performed in an inductively coupled plasma torch. These experiments were conducted at a plate power of 40 kW, which produced an air plasma in local thermodynamic equilibrium with a maximum temperature of approximately 6200K, corresponding to a specific enthalpy of 16.4 MJ/kg. Three techniques were developed to measure the ablator surface temperature. Recession rates and product species profiles were measured for two different materials (ASTERMâ„¢; and carbon-bonded carbon fiber) at a plasma velocity of approximately 20 m/s. Measured surface temperatures were in the range of 2100 to 2300 K, and corresponding hot-wall heat fluxes were approximately 1.4 MW/m2. Spatially resolved profiles of the main species detected in the boundary layer were recorded, and they showed evidence of strong coupling between the ablated material and the freestream. Copyright © 2014 by Megan E. MacDonald.

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Engineering, Mechanical
Thermodynamics
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