The present paper deals with a United States Bureau of Reclamation (USBR) Type II stilling basin, which is characterized by blocks at the end of the chute and a dentated sill at the end of the basin. For this basin, USBR only gives overall design criteria concerning basin length and block dimensions on the basis of the assumption that the hydraulic jump remains confined within the sill. No considerations are provided concerning possible different jump types, pressure regimes, and forces acting on the sill. To comply with such a lack, an experimental campaign was undertaken that focuses on the differences among hydraulic jump types that can occur in a USBR Type II stilling basin. Jump types can range between submerged and spray jump types; accordingly, dimensionless relations are provided to predict jump type and position for assigned boundary conditions, with particular concern about the submerged/nonsubmerged distinction. Considerations about the drag force and drag coefficients are provided, along with estimates of pressure extreme fluctuations. Finally, an evaluation of the dissipation efficiency is presented for both submerged and nonsubmerged jumps, enabling comparisons among different jump types and with classical hydraulic jump. - See more at: http://ascelibrary.org/doi/abs/10.1061/(ASCE)IR.1943-4774.0001150#sthash.ajmk3TuB.dpuf

Hydraulic Design of a USBR Type II Stilling Basin / Padulano, Roberta; Fecarotta, Oreste; DEL GIUDICE, Giuseppe; Carravetta, Armando. - In: JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING. - ISSN 0733-9437. - 143:5(2017), pp. 1-9. [10.1061/(ASCE)IR.1943-4774.0001150]

Hydraulic Design of a USBR Type II Stilling Basin

PADULANO, ROBERTA;FECAROTTA, ORESTE;DEL GIUDICE, GIUSEPPE;CARRAVETTA, ARMANDO
2017

Abstract

The present paper deals with a United States Bureau of Reclamation (USBR) Type II stilling basin, which is characterized by blocks at the end of the chute and a dentated sill at the end of the basin. For this basin, USBR only gives overall design criteria concerning basin length and block dimensions on the basis of the assumption that the hydraulic jump remains confined within the sill. No considerations are provided concerning possible different jump types, pressure regimes, and forces acting on the sill. To comply with such a lack, an experimental campaign was undertaken that focuses on the differences among hydraulic jump types that can occur in a USBR Type II stilling basin. Jump types can range between submerged and spray jump types; accordingly, dimensionless relations are provided to predict jump type and position for assigned boundary conditions, with particular concern about the submerged/nonsubmerged distinction. Considerations about the drag force and drag coefficients are provided, along with estimates of pressure extreme fluctuations. Finally, an evaluation of the dissipation efficiency is presented for both submerged and nonsubmerged jumps, enabling comparisons among different jump types and with classical hydraulic jump. - See more at: http://ascelibrary.org/doi/abs/10.1061/(ASCE)IR.1943-4774.0001150#sthash.ajmk3TuB.dpuf
2017
Hydraulic Design of a USBR Type II Stilling Basin / Padulano, Roberta; Fecarotta, Oreste; DEL GIUDICE, Giuseppe; Carravetta, Armando. - In: JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING. - ISSN 0733-9437. - 143:5(2017), pp. 1-9. [10.1061/(ASCE)IR.1943-4774.0001150]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/669489
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