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COMMENTS ON “A NUMERICAL STUDY ON THE PROPAGATION OF SOUND THROUGH CAPILLARY TUBES WITH MEAN FLOW”

✍ Scribed by K.P. DENISOV; V.L. KHITRIK

Publisher: Elsevier Science
Year: 2001
Tongue: English
Weight: 161 KB
Volume: 247
Category: Article
ISSN: 0022-460X
DOI: 10.1006/jsvi.2000.3528

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✦ Synopsis

Jeong and Ih [1] have investigated the sound propagation through a capillary duct with mean #ow. Numerical solutions have been found for non-isentropic acoustic disturbances with inclusion of the radial velocity terms in the governing equations and the radial velocity pro"les over a cross-section varying the shear wave number which have been calculated for both the case of zero mean #ow and the case of the presence of steady #ow in the capillary duct. However, for both of these cases the pro"les mentioned above do not satisfy equation (7) of reference [1] at the wall of the duct ( "1), as will be shown here.

Indeed, equation (7) of reference [1] that applies at "1 is given by

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