Comparative study on microwave plasma-assisted combustion of premixed and nonpremixed methane-air flows

2014 ◽  
Author(s):  
Wei Wu ◽  
Che A. Fuh ◽  
Chuji Wang
Keyword(s):  
Comparative Study ◽  
Microwave Plasma ◽  
Plasma Assisted Combustion ◽  
Air Flows

A Comparative Study of Rotational Temperatures in a Microwave Plasma: OH Radical versus N2+

1988 ◽  
Vol 42 (1) ◽  
pp. 96-100 ◽  
Author(s):  
John M. Workman ◽  
P. A. Fleitz ◽  
Harry B. Fannin ◽  
Joseph A. Caruso ◽  
C. J. Seliskar
Keyword(s):  
Comparative Study ◽  
Microwave Plasma ◽  
Rotational Temperature ◽  
Molecular Nitrogen ◽  
Oh Radical ◽  
Microwave Induced Plasma ◽  
Torch Design ◽  
Nitrogen Ion ◽  
Increasing Temperature

A rotational temperature comparative study of OH radical vs. N2+ was carried out on a low-power helium microwave-induced plasma. Under the prevailing conditions, N2+ was found to provide twice as many usable lines for temperature measurement than did hydroxyl radical. For the particular torch design used, both species exhibited slightly increasing rotational temperatures at lower flow rates. At fixed conditions, OH consistently indicated higher rotational temperatures than those of the molecular nitrogen ion. Positional studies revealed a slightly increasing temperature near the center of the plasma. This work suggests that N2+ may provide a number of advantages over OH radical as a thermometric probe species in the determination of plasma rotational temperature.

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