Skip to Main content Skip to Navigation
Journal articles

Experimental apparatus for roll-wave measurements and comparison with a 1D mathematical model

Abstract : An experimental approach to examine the instabilities present on free surfaces of non-Newtonian fluid flow occurring in inclined channels is presented. When these flows occur in favorable conditions of inclination and discharge, it is observed that the propagation of instabilities can evolve into a specific type of wave, known as roll waves. The experimental apparatus developed allows simulation of stabilized roll waves in many scenarios for Newtonian and non-Newtonian rheology fluids, thereby constituting a highly useful approach for the understanding and control of roll waves. The fluid test for the non-Newtonian case used a gel rheometrically representative of the muddy material presented in natural disasters, such as mudflows. A low-cost, high-performance, and nonintrusive level measurement system (ultrasonic transducer) is proposed. A comparison between the experimental results obtained and a one-dimensional (1D) mathematical model exhibited good amplitude and wave-period estimations. © 2017 American Society of Civil Engineers.
Complete list of metadatas

https://hal-univ-rennes1.archives-ouvertes.fr/hal-01619373
Contributor : Laurent Jonchère <>
Submitted on : Thursday, October 19, 2017 - 1:06:51 PM
Last modification on : Friday, March 6, 2020 - 1:33:00 PM

Identifiers

Citation

G.F. Maciel, F.O. Ferreira, E.F. Cunha, G.H. Fiorot. Experimental apparatus for roll-wave measurements and comparison with a 1D mathematical model. Journal of Hydraulic Engineering, American Society of Civil Engineers, 2017, 143 (11), pp.04017046. ⟨10.1061/(ASCE)HY.1943-7900.0001366⟩. ⟨hal-01619373⟩

Share

Metrics

Record views

206