Light Probe for the Measurement of Turbulent Concentration Fluctuations

1963 ◽  
Vol 34 (10) ◽  
pp. 1086-1090 ◽  
Author(s):  
Jon Lee ◽  
Robert S. Brodkey
Keyword(s):  
Concentration Fluctuations ◽  
Light Probe

Light Probe for Measurement of Turbulent Concentration Fluctuations

1967 ◽  
Vol 38 (1) ◽  
pp. 26-28 ◽  
Author(s):  
James O. Nye ◽  
Robert S. Brodkey
Keyword(s):  
Concentration Fluctuations ◽  
Light Probe

The scalar spectrum in the viscous-convective subrange

1967 ◽  
Vol 29 (1) ◽  
pp. 151-163 ◽  
Author(s):  
James O. Nye ◽  
Robert S. Brodkey
Keyword(s):  
Power Law ◽  
Turbulent Mixing ◽  
Pipe Flow ◽  
Spectral Region ◽  
Concentration Fluctuations ◽  
Fibre Optic ◽  
Schmidt Numbers ◽  
Flow Situation ◽  
Light Probe ◽  
Additional Object

A modified design of a fibre optic light probe was used for the measurement of turbulent concentration fluctuations and the spectra associated with these. The main object was to establish experimentally the nature of the scalar spectrum in the viscous-convective subrange. The existence of a spectral region with a (-1)-power law form supports the uniform straining model proposed by Batchelor (1959) for Schmidt numbers (v/D) much greater than unity. For this range, the data do not agree with the cascading process suggested by Pao (1965).An additional object was to study further the decay of the concentration fluctuations in terms of a measure of the turbulent mixing. More specifically, the limitations of applying the isotropic stationary mixing theory of Corrsin (1957, 1964a) to a shear pipe flow situation and the validity of the earlier data for this case (Lee & Brodkey 1964; Brodkey 1966a, b; and Gegner & Brodkey 1966) were investigated.

Exergy loss characteristics of DME/air and ethanol/air mixtures with temperature and concentration fluctuations under HCCI/SCCI conditions: A DNS study

2021 ◽  
Vol 226 ◽  
pp. 334-346
Author(s):  
Jiabo Zhang ◽  
Minh Bau Luong ◽  
Francisco E. Hernández Pérez ◽  
Dong Han ◽  
Hong G. Im ◽  
...  
Keyword(s):  
Concentration Fluctuations ◽  
Exergy Loss
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