Author(s)

Hajar Alshoufi

Department of Hydraulic and Water Resources Engineering, Budapest University of Technology and Economics, Budapest, Hungary.

Experimental campaigns were carried out to extract results from the flow in an open cylindrical channel under precession. The bore or the hydraulic jump is the main concentration. The experimental results are varied; this includes velocity results and geometrical ones related to the depths, phases, and lengths. For the geometrical ones a Coupled-Charged Device Camera (CCD) is used to extract pictures, those enable us to get quantitative and qualitative results. For the velocity results, Acoustic Doppler Velocimeter (ADV) is used to extract the velocity signals under the bore surface, after analyzing them it turned out that they have Cnoidal form, thus a new BBM model is derived, which is exactly as the one derived by Peregrine (1966), the only difference is the forcing gravity term, this model is solved analytically after omitting this gravity term as it is considered small, and the solution is compared with the real signals with good match. Finally, a new relationship that connects between the conjugate depths after and before the bore is derived which has time-space dependency due to the Centrifugal effect, it was also used and compared with some experimental results.

Bore, Precession, CCD Camera, ADV Velocimeter, Cnoidal Waves

Alshoufi, H. (2022) Experimental Results from Bore Phenomenon in Open Cylindrical Channel under Precession. Open Journal of Fluid Dynamics, 12, 69-85. doi: 10.4236/ojfd.2022.121004.