Measurements of Gas Concentration Fluctuations at Water Surface
Publication: Journal of Hydraulic Engineering
Volume 116, Issue 6
Abstract
Experiments in a grid‐stirred laboratory tank have been conducted in an effort to elucidate the details of the surface transfer mechanisms, including the structure of up‐ or down‐welling motions and existence of various boundary layers. In addition to earlier two‐component measurements of the turbulent near‐surface velocity field, a gas microprobe has been constructed and used for measurements of gas fluctuations. The gas probe uses the polarographic principle for the measurement of oxygen and has tip dimensions of the order of a few microns. Measurements are presented that display the conditions in the gas boundary layer (about 400‐microns thickness), including mean and fluctuating conditions.
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References
1.
Asher, W. E., and Pankow, J. F. (1986). “The interaction of mechanically generated turbulence and interfacial films with a liquid phase controlled gas/liquid transport process.” Tellus, 38B, 305–318.
2.
Brumley, B. H., and Jirka, G. H. (1987). “Near‐surface turbulence in a grid‐stirred tank.” J. Fluid Mech., 183, 235–263.
3.
Brumley, B. H., and Jirka, G. H. (1988). “Air‐water transfer of slightly soluble gases: Turbulence, interfacial processes and conceptual models.” J. Physico‐Chemical Hydrodynamics, 16(3), 295–319.
4.
Brutsaert, W., and Jirka, G. H., eds. (1984). Gas transfer at water surfaces. D. Reidel Publishing Co., Boston, Mass.
5.
Ho, A. H.‐W. (1987). “A study of oxygen transfer at the air‐water interface of a grid‐agitated tank,” thesis presented to Cornell University, at Ithaca, N.Y., in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
6.
Luk, S., and Lee, Y. H. (1986). “Mass transfer in eddies close to air‐water surface interface.” AIChE J., 32, 9, 1546–1554.
7.
Pankow, J. F., Asher, W. E., and List, E. J. (1984). “Carbon dioxide transfer at the gas/water interface as a function of system turbulence.” Gas transfer at water surfaces, W. Brutsaert and G. H. Jirka, eds., D. Reidel Publishing Co., Boston, Mass.
8.
Thompson, S. M., and Turner, J. S. (1975). “Mixing across an interface due to turbulence generated by an oscillating grid.” J. Fluid Mech., 67, 349–368.
9.
Tsao, G. T., and Lee, L. D. (1975). “Oxygen transfer in fermentation.” AIChE J., 21(5), 979–985.
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Copyright © 1990 ASCE.
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Published online: Jun 1, 1990
Published in print: Jun 1990
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