Artículo
Abstract:
The nonlinear conditions for the development of helical vortex filaments in a circular tube are considered. The helical flow is assumed to be irrotational, except in a vortex filament of infinitesimal core area. By introducing an appropriate image for this helical vortex filament, the boundary condition on the material frontier is satisfied. By assuming an axisymmetric flow upstream and imposing the conservation laws, a dependence between the helix pitch and the nonlinear amplitude of the helical vortex developed downstream is obtained. Our results show that only helical flows with the pitch in a certain range of values are allowed. The dependence of this range on the swirl ratio and on the tube cross section is considered. We discuss the usefulness of the nonlinear analysis of the allowed flows to explain experimental results and to complement the usual linear study of stability. © 1999 American Institute of Physics.
Registro:
| Documento: | Artículo |
| Título: | The stability of steady, helical vortex filaments in a tube |
| Autor: | Sarasúa, L.G.; Schifino, A.C.S.; González, R. |
| Filiación: | Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay Fac. de Cie. and Fac. de Ing., Universidad de la República, Montevideo, Uruguay Fac. de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina |
| Año: | 1999 |
| Volumen: | 11 |
| Número: | 5 |
| Página de inicio: | 1096 |
| Página de fin: | 1103 |
| DOI: | http://dx.doi.org/10.1063/1.869980 |
| Título revista: | Physics of Fluids |
| Título revista abreviado: | Phys Fluids |
| ISSN: | 10706631 |
| CODEN: | PHFLE |
| PDF: | https://bibliotecadigital.exactas.uba.ar/download/paper/paper_10706631_v11_n5_p1096_Sarasua.pdf |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10706631_v11_n5_p1096_Sarasua |
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Citas:
---------- APA ----------
Sarasúa, L.G., Schifino, A.C.S. & González, R. (1999) . The stability of steady, helical vortex filaments in a tube. Physics of Fluids, 11(5), 1096-1103.http://dx.doi.org/10.1063/1.869980
---------- CHICAGO ----------
Sarasúa, L.G., Schifino, A.C.S., González, R. "The stability of steady, helical vortex filaments in a tube" . Physics of Fluids 11, no. 5 (1999) : 1096-1103.http://dx.doi.org/10.1063/1.869980
---------- MLA ----------
Sarasúa, L.G., Schifino, A.C.S., González, R. "The stability of steady, helical vortex filaments in a tube" . Physics of Fluids, vol. 11, no. 5, 1999, pp. 1096-1103.http://dx.doi.org/10.1063/1.869980
---------- VANCOUVER ----------
Sarasúa, L.G., Schifino, A.C.S., González, R. The stability of steady, helical vortex filaments in a tube. Phys Fluids. 1999;11(5):1096-1103.http://dx.doi.org/10.1063/1.869980
