<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The paper addresses the prediction of roll-waves occurrence in mud-flows. The spatial growth of a point-wise disturbance is analytically described, based on the linearized flow model of a Herschel and Bulkley fluid, in the neighborhood of an initial uniform base condition. The theoretical achievements allow to generalize to mud-flows the minimum channel criterion commonly used for the prediction of roll-waves in clear-water. The applicability of the criterion is discussed through the comparison with literature laboratory data concerning unstable flows without rollwaves.</p></abstract>

The paper addresses the prediction of roll-waves occurrence in mud-flows. The spatial growth of a point-wise disturbance is analytically described, based on the linearized flow model of a Herschel and Bulkley fluid, in the neighborhood of an initial uniform base condition. The theoretical achievements allow to generalize to mud-flows the minimum channel criterion commonly used for the prediction of roll-waves in clear-water. The applicability of the criterion is discussed through the comparison with literature laboratory data concerning unstable flows without rollwaves.

On the applicability of minimum channel length criterion for roll-waves in mud-flows

Dipartimento di Ingegneria Civile e Meccanica – Università di Cassino e del Lazio Meridionale, Via Di Biasio 43, 03043 Cassino (FR), Italy

Dipartimento di Ingegneria Civile, Design, Edilizia, Ambiente, Seconda Università di Napoli, Via Roma 29, 81031 Aversa (CE), Italy

Journal of Hydrology and Hydromechanics

The paper addresses the prediction of roll-waves occurrence in mud-flows. The spatial growth of a point-wise disturbance is analytically described, based on...

On the applicability of minimum channel length criterion for roll-waves in mud-flows

Pubblicato online: 01 dic 2013

Pagine: 286 - 292

DOI: https://doi.org/10.2478/johh-2013-0036

This content is open access.