In the paper we review some recent work on the mechanics of formation and development of river bars. The emphasis is placed on the instability process which leads to the spontaneous development of bars in almost straight reaches of alluvial rivers. A three dimensional formulation of the problem is presented along with a discussion on the relevant closure relationships. Results of linear and non Linear theories for free bars under bedload dominated conditions are summarised. Furthermore, account is given on the effect bn bar instability induced by suspended load, grain sorting and width variations. Some as yet unpublished results are also presented.

Free bars in rivers / Tubino, Marco; R., Repetto; Zolezzi, Guido. - In: JOURNAL OF HYDRAULIC RESEARCH. - ISSN 0022-1686. - STAMPA. - 37:6(1999), pp. 759-775. [10.1080/00221689909498510]

Free bars in rivers

Tubino, Marco;Zolezzi, Guido
1999-01-01

Abstract

In the paper we review some recent work on the mechanics of formation and development of river bars. The emphasis is placed on the instability process which leads to the spontaneous development of bars in almost straight reaches of alluvial rivers. A three dimensional formulation of the problem is presented along with a discussion on the relevant closure relationships. Results of linear and non Linear theories for free bars under bedload dominated conditions are summarised. Furthermore, account is given on the effect bn bar instability induced by suspended load, grain sorting and width variations. Some as yet unpublished results are also presented.
1999
6
Tubino, Marco; R., Repetto; Zolezzi, Guido
Free bars in rivers / Tubino, Marco; R., Repetto; Zolezzi, Guido. - In: JOURNAL OF HYDRAULIC RESEARCH. - ISSN 0022-1686. - STAMPA. - 37:6(1999), pp. 759-775. [10.1080/00221689909498510]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/72776
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