In:
AIChE Journal, Wiley, Vol. 1, No. 1 ( 1955-03), p. 61-69
Abstract:
This paper concerns the kinetics of the processes that take place when a high‐velocity jet of fluid mixes turbulently with a low‐velocity, induced stream of the same fluid in a duct of uniform diameter. Semi‐two‐dimensional solutions of the equations of transport involving two empirical coefficients were obtained by application of Reichardt's hypothesis and three assumptions: (a) a negligible fraction of the flow entity (energy, mass, or momentum) is lost at the wall and the presence of the boundary layer may be ignored, (b) the static pressure is uniform over a section of the duct, and ( c ) the turbulence pattern is similar to that in free jets except that the duct wall limits the growth of the scale of the turbulence. A mixing index, which is a measure of the degree to which the jet stream remains unmixed with the induced stream at any point, was defined and related to the geometry of the system and the flow parameters by means of the theoretical equation, and a method of evaluating the empirical coefficients for a typical case of momentum transport was described.
Type of Medium:
Online Resource
ISSN:
0001-1541
,
1547-5905
DOI:
10.1002/aic.690010109
Language:
English
Publisher:
Wiley
Publication Date:
1955
detail.hit.zdb_id:
2020333-0
detail.hit.zdb_id:
240008-X
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