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- W2093079507 abstract "Abstract A basic experimental study of the fluid dynamics and heat transfer characteristics of mercury, in fully developed turbulent flow through annuli, was carried out The main purposes of the study were, first, to get comparisons between local ϵH and ϵM values, and second, to determine the effects of wetting on both the fluid dynamics and heat transfer. This paper presents the results of the fluid dynamics portion of the study. Experiments were conducted where the mercury either did not wet at all, or did thoroughly wet, the channel walls. The effects of wetting were found to be appreciable. When both annulus walls were unwetted, the velocity profiles were quite similar to those reported in the past for ordinary fluids. When the inner wall (only) was wetted, the radius of maximum velocity moved considerably outward (i.e. toward r2) from what it was when both walls were unwetted; and when both walls were wetted, the radius of maximum velocity also moved outward, but not as far as that for the situation where only the inner wall was wetted. These differences in flow behavior are reflected in the u+ vs. In y+ relationships and in the ϵM profiles. Wetting was found to have a large influence on the u+ vs. ta y+ relationship for the inner portion of an annulus. The eddy diflusivities of momentum transfer were correlated only moderately well by modified forms of the Kays-Leung [6] and Eifler [13] correlations. It is shown that the ratio of the maximum value of ϵM in the inner portion of an annulus to that in the outer portion is an explicit function of the radius ratio and is independent of Reynolds number." @default.
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- W2093079507 date "1972-12-01" @default.
- W2093079507 modified "2023-10-17" @default.
- W2093079507 title "Experimental study of effect of wetting on turbulent flow of mercury in annuli" @default.
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- W2093079507 doi "https://doi.org/10.1016/0017-9310(72)90150-0" @default.
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