Turbulent scales in a fan-stirred combustion bomb

Turbulent scales were investigated in a fan-stirred combustion bomb. Two-dimensional particle velocimetry measurements were used to evaluate flow fields and scales for the Reynolds number range Re l = 37 - 711, the subscript l referring to the integral scale. The Taylor scale λ is correlated with th...

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Bibliographic Details
Published in:Combustion and flame 2001-11, Vol.127 (3), p.2119-2123
Main Authors: Sick, Volker, Hartman, Michael R., Arpaci, Vedat S., Anderson, Richard W.
Format: Article
Language:English
Subjects:
Applied sciences
Combustion of gaseous fuels
Combustion. Flame
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Theoretical studies. Data and constants. Metering
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Summary:Turbulent scales were investigated in a fan-stirred combustion bomb. Two-dimensional particle velocimetry measurements were used to evaluate flow fields and scales for the Reynolds number range Re l = 37 - 711, the subscript l referring to the integral scale. The Taylor scale λ is correlated with the electrical power input Π for the fans producing turbulence. It is found that the integral scale remains unchanged and λΠ 1/6 = constant for Re l > 100. When electrical power input is assumed to be a measure for turbulent production, dimensional arguments based on a volume-averaged large-scale estimate for viscous dissipation lead to the foregoing correlation for homogeneous turbulence.
ISSN:0010-2180
1556-2921
DOI:10.1016/S0010-2180(01)00314-5