Experimentally determined turbulent Prandtl numbers in liquid sodium at low Reynolds numbers

Bremhorst K. and Krebs L. (1992) Experimentally determined turbulent Prandtl numbers in liquid sodium at low Reynolds numbers. International Journal of Heat and Mass Transfer, 35 2: 351-359. doi:10.1016/0017-9310(92)90273-U


Author Bremhorst K.
Krebs L.
Title Experimentally determined turbulent Prandtl numbers in liquid sodium at low Reynolds numbers
Journal name International Journal of Heat and Mass Transfer   Check publisher's open access policy
ISSN 0017-9310
Publication date 1992-01-01
Sub-type Article (original research)
DOI 10.1016/0017-9310(92)90273-U
Open Access Status Not yet assessed
Volume 35
Issue 2
Start page 351
End page 359
Total pages 9
Language eng
Subject 3104 Condensed Matter Physics
2210 Mechanical Engineering
1507 Fluid Flow and Transfer Processes
Abstract Turbulent Prandtl numbers have been deduced from measurements of mean velocity and mean temperature distributions and their half value radii for a liquid sodium jet discharging into essentially still fluid. Results obtained indicate a velocity dependence and are similar to those reported in the literature for pipe flows. The velocity dependence, which is assumed to be due to transition to an inertial-conductive flow regime where turbulent diffusion of heat inherent in the turbulent Prandtl number no longer exists, becomes pronounced at low velocities. Combination of the new jet flow and existing pipe flow data for liquid sodium leads to a simple functional relationship between turbulent Prandtl number and eddy diffusivity of heat which may be readily solved for ε once ε is known. The combined results show that, for liquid sodium, significant increases in turbulent Prandtl number occur when flow conditions lead to ε α < 2.5, that is, when ε/gn < 2 Pr.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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