Stretching in duct flows

Stretching in duct flows

Duct flows are steady three‐dimensional isochoric velocity fields composed of a recirculating two‐dimensional cross‐sectional flow and a unidirectional axial flow, both flows being independent of the axial distance. It is shown that lineal stretch in such flows increases linearly in time. In particu...

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Veröffentlicht in:Physics of fluids. A, Fluid dynamics Fluid dynamics, 1991-11, Vol.3 (11), p.2819-2821
Hauptverfasser: Franjione, J. G., Ottino, J. M.
Format: Artikel
Sprache:eng
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Zusammenfassung:Duct flows are steady three‐dimensional isochoric velocity fields composed of a recirculating two‐dimensional cross‐sectional flow and a unidirectional axial flow, both flows being independent of the axial distance. It is shown that lineal stretch in such flows increases linearly in time. In particular, length stretch in bounded steady two‐dimensional flows is linear as well.
ISSN:0899-8213
2163-5013
DOI:10.1063/1.858171