3-D analysis of flow around side-weirs constructed in agricultural open channel
2015
Namihira, A. (NARO National Institute for Rural Engineering, Tsukuba, Ibaraki (Japan)) | Takaki, K. | Taruya, H.
3D flow analysis of the flow around side-weir constructed in a agricultural open channel was executed to clarify the applicability for its hydraulic design. As a result, it was confirmed that a qualitative tendency of the flow regime by the hydraulic model test in the past, in which the conditions were outside of coverage of the discharge formula of side-weir but detailed data were measured, was reproduced enough and that discharge over side-weir was in good agreement with the experimental value. Furthermore, the results of numerical simulation for the model, in which the conditions were modified to inside of coverage of the discharge formula, indicated that the discharge over side-weir derived from simulation directly agreed with the discharge calculated from the discharge formula with simulated flow regime on high precision.
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