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Turbulence determination and blockage correction for immersed cylinder heat transfer at high reynolds numbers
Author(s) -
Talmor Eliyahu
Publication year - 1966
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690120611
Subject(s) - turbulence , mechanics , boundary layer , reynolds number , cylinder , pressure gradient , transition point , k epsilon turbulence model , thermodynamics , turbulence kinetic energy , heat transfer , stagnation point , intensity (physics) , k omega turbulence model , physics , reynolds stress , mathematics , geometry , optics
Transitional immersed cylinder heat transfer measurements are used in conjunction with the theory of boundary‐layer transition of van Driest and Blumer to determine the corresponding free‐stream turbulence intensity. The consistency of the results is demonstrated by comparison to other investigations where the free‐stream turbulence intensity was directly measured with a favorable pressure gradient present. Successful determination of the turbulence level for high blockage data and proper correction for channel blockage effects for all data compared lead to an improved and extended correlation of immersed cylinder average and stagnation point heat transfer results. Concurrently, a boundary‐layer transition theory is extended from zero pressure gradient and moderate turbulence levels to conditions of high turbulence and high pressure gradient.