Turbulent gaseous combustion part I: Local species concentration measurements

1981 ◽  
Vol 42 ◽  
pp. 183-196 ◽  
Author(s):  
Max H. Lewis ◽  
L.Douglas Smoot
Keyword(s):  
Species Concentration ◽  
Local Species ◽  
Concentration Measurements

An Analysis of Coupled Multicomponent Diffusion in Interstitial Tissue

1994 ◽  
Vol 116 (2) ◽  
pp. 164-171 ◽  
Author(s):  
P. D. Schreuders ◽  
K. R. Diller ◽  
J. J. Beaman ◽  
H. M. Paynter
Keyword(s):  
Multicomponent Diffusion ◽  
Frequency Parameter ◽  
Interstitial Tissue ◽  
Specific System ◽  
Species Concentration ◽  
One Dimensional ◽  
Jump Distance ◽  
Local Species ◽  
The Individual ◽  
Graph Form

A one-dimensional multicomponent kinetic model was developed to simulate the interstitial diffusion of macromolecules in a three component system, consisting of water, the macromolecule and the interstitial matrix. Movement of the individual components was modeled as occurring in finite jumps between discrete low energy wells along paths defined in terms of species occupation. The flow rate was expressed as a function of the local species concentration, the jump distance, and a kinetic frequency parameter. The model, implemented in pseudo-bond graph form, was examined by fitting it to data obtained for the transport of fluorescein tagged dextran to determine the kinetic constants for that specific system.

scholarly journals Flow field and species concentration measurements in the primary zone of an aero-engine combustion chamber

2018 ◽  
Vol 10 (1) ◽  
pp. 168781401774805
Author(s):  
Yinli Xiao ◽  
Zupeng Wang ◽  
Zhengxin Lai ◽  
Kefei Chen ◽  
Wenyan Song
Keyword(s):  
Flow Field ◽  
Combustion Chamber ◽  
Operating Conditions ◽  
Chamber Pressure ◽  
Species Concentration ◽  
Primary Zone ◽  
Major Species ◽  
Engine Combustion ◽  
Aero Engine ◽  
Concentration Measurements

The principal features of primary zone determine the performance parameters of the whole combustion chamber, such as the pollutant emissions and combustion efficiency. In this work, flow field and major species concentration measurements are conducted in the primary zone of an aero-engine combustion chamber. The operating conditions such as air inlet temperature, chamber pressure, and air-to-fuel ratio are chosen to replicate the realistic operating conditions. The velocity field and streamlines are obtained by particle imaging velocimetry technology. The concentrations of major species are acquired by a spontaneous Raman scattering system. This article validates the feasibility of two laser diagnostic measurement techniques and presents the initial results under realistic aero-engine conditions.

Temperature and Species-Concentration Measurements in Turbulent Flames by the CARS Technique

1983 ◽  
Vol 7 (5) ◽  
pp. 403-409 ◽  
Author(s):  
L.P. Goss ◽  
G.L. Switzer ◽  
D.D. Trump ◽  
P.W. Schreiber
Keyword(s):  
Turbulent Flames ◽  
Species Concentration ◽  
Concentration Measurements

An Experimental Method for Species Concentration Measurements in a Welding ARC Using Laser-Induced Fluorescence

1987 ◽  
Vol 98 ◽  
Author(s):  
S. C. Snyder ◽  
C. B. Shaw ◽  
C. L. Shull
Keyword(s):  
Experimental Method ◽  
Theoretical Consideration ◽  
Laser Induced Fluorescence ◽  
Thermal Plasmas ◽  
Species Concentration ◽  
Preliminary Results ◽  
Welding Arc ◽  
Gas Tungsten ◽  
Concentration Measurements

ABSTRACTAn experimental method using laser-induced fluorescence (LIF) to determine the distribution of neutral manganese in a gas tungsten welding arc is described. The theoretical consideration and experimental difficulties encountered when extending LIF techniques from flames to thermal plasmas are discussed, and preliminary results are presented.

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