Abstract
This paper presents experiments and computer simulation for the erosion and deposition processes along a 180° open canal bend. The computer simulation is conducted by Nays2DH model in iRIC software. The models are conducted with the curvature’s radius ratio (O/L) varies within 3.0 to 8.5. Experiments produced that the erosion and deposition actions decrease as O/L increases. The minimal erosion and deposition are detected at (O/L =8.5). The optimum place of a bridge circular support along the bend is defined. The results of Nays2DH Model are compared with tests. RSQ for the modelled statuses is 88.329% and the correlation factor between simulations and the gauged depths is 93.98%. 20
Highlights
Curved open canal are subjected to complicated erosion and deposition processes
Modelling of Deposition and Erosion Processes Along A 180° Open Canal Bend By NAYS2DH in iRIC
The results of the deposition and erosion phenomenon through open canal with bends at different ω and Ø/L =3.0 are analyzed
Summary
Curved open canal are subjected to complicated erosion and deposition processes. A study presented CFD model to predict erosion process in three different S-bends [6]. Recent research built a 2-D numerical model to detect the transporting of the sediment through open canals [14]. Other study used two numerical models to detect the scouring problems at Nile River upstream of the new intake of Esmaeilia canal [15]. No available researches studied erosion processes around the supports along curved reachs. This paper presents experiments for the erosion and deposition processes along 180° bend through open canal. Nays2DH Model is applied to simulate the flow and erosion processes. The numerical results are compared with the tests for open canal
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