American Society of Civil Engineers


New Expression of the Hydraulic Jump Roller Length


by Francesco Giuseppe Carollo, Ph.D., (Engineer, Dipartimento dei Sistemi Agro-Ambientali, Facoltà di Agraria, Università di Palermo, Viale delle Scienze, 90128 Palermo E-mail: fg.carollo@proland.it), Vito Ferro, Ph.D., (corresponding author), (Full Professor, Dipartimento dei Sistemi Agro-Ambientali, Facoltà di Agraria, Università di Palermo, Viale delle Scienze, 90128 Palermo E-mail: vito.ferro@unipa.it), and Vincenzo Pampalone, Ph.D., (Engineer, Dipartimento dei Sistemi Agro-Ambientali, Facoltà di Agraria, Università di Palermo, Viale delle Scienze, 90128 Palermo E-mail: vincenzo.pampalone@unipa.it)

Journal of Hydraulic Engineering, Vol. 138, No. 11, November 2012, pp. 995-999, (doi:  http://dx.doi.org/10.1061/(ASCE)HY.1943-7900.0000634)

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Document type: Technical Note
Abstract: This paper presents the results of an experimental investigation on the roller length of both classical and B-jumps on smooth beds. Using the measurements conducted in this investigation and those available in the literature, a new relationship is proposed for estimating the roller length of classical and B-jumps on smooth beds. Finally, it is demonstrated that the proposed equation is also applicable to estimate the roller length of hydraulic jumps on rough horizontal beds.


ASCE Subject Headings:
Open channel flow
Hydraulic jump
Energy dissipation
Slopes

Author Keywords:
Open channel flow
Hydraulic jump
Energy dissipation
Sloping channel