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Digitale Medien

Linear stability of non-Newtonian annular liquid sheets (1999)

Alleborn, N. ; Raszillier, N. ; Durst, F.

Springer

Acta mechanica 137 (1999), S. 33-42

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Details

ISSN: 1619-6937

Quelle: Springer Online Journal Archives 1860-2000

Thema: Maschinenbau , Physik

Notizen: Summary This paper reports a linear stability analysis of a non-Newtonian annular liquid sheet that is surrounded by nonviscous fluids in relative axial motion to it. It is shown that for a stress free basic flow the dispersion relation giving the absolute and convective instability mechanisms can be immediately obtained from the dispersion relation for a Newtonian sheet by introducing a wavenumber dependent “viscosity”. The stability behavior of the sheet is investigated numerically by a continuation algorithm, by which the solution branches of the dispersion relation, relevant for the stability information, can be traced. The results give a stability picture which covers the whole range of annular sheets from the cylindrical jet to the plane liquid curtain.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01313142

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