Experimental and computational investigation of an electric arc air-spike in hypersonic flow with drag measurements

2001 ◽  
Author(s):  
R. Bracken ◽  
l. Myrabo ◽  
H. Nagamatsu ◽  
E. Meloney ◽  
M. Shneider
Keyword(s):  
Hypersonic Flow ◽  
Electric Arc ◽  
Computational Investigation

Experimental/Computational Investigation of Drag Reduction by Electric-Arc Airspikes at Mach 10

2004 ◽  
Author(s):  
Christopher Hartley ◽  
Tom Portwood ◽  
Mathew Filippelli ◽  
Leik Myrabo ◽  
Henry Nagamatsu ◽  
...  
Keyword(s):  
Drag Reduction ◽  
Electric Arc ◽  
Computational Investigation ◽  
Mach 10

Experimental investigation of an electric arc simulated 'air spike' in hypersonic flow

2000 ◽  
Author(s):  
M. Minucci ◽  
R. Bracken ◽  
L. Myrabo ◽  
H. Nagamatsu ◽  
K. Shanahan
Keyword(s):  
Experimental Investigation ◽  
Hypersonic Flow ◽  
Electric Arc

Analytical Electron Microscopy Characterization of Electric Arc Furnace Dust

1981 ◽  
Vol 39 ◽  
pp. 134-135
Author(s):  
J. R. Porter ◽  
J. I. Goldstein ◽  
D. B. Williams
Keyword(s):  
Electron Microscopy ◽  
Analytical Electron Microscopy ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Dust Particles ◽  
Particle Analysis ◽  
Arc Furnace ◽  
Analytical Electron ◽  
Residual Elements ◽  
Industry Practice

Alloy scrap metal is increasingly being used in electric arc furnace (EAF) steelmaking and the alloying elements are also found in the resulting dust. A comprehensive characterization program of EAF dust has been undertaken in collaboration with the steel industry and AISI. Samples have been collected from the furnaces of 28 steel companies representing the broad spectrum of industry practice. The program aims to develop an understanding of the mechanisms of formation so that procedures to recover residual elements or recycle the dust can be established. The multi-phase, multi-component dust particles are amenable to individual particle analysis using modern analytical electron microscopy (AEM) methods.Particles are ultrasonically dispersed and subsequently supported on carbon coated formvar films on berylium grids for microscopy. The specimens require careful treatment to prevent agglomeration during preparation which occurs as a result of the combined effects of the fine particle size and particle magnetism. A number of approaches to inhibit agglomeration are currently being evaluated including dispersal in easily sublimable organic solids and size fractioning by centrifugation.

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