| Title |
Flow Resistance by Discontinuous Topography in Simulating Shallow-water Flow |
| DOI |
https://doi.org/10.12652/Ksce.2019.39.1.0175 |
| Keywords |
천수 흐름;근사 Riemann 해법;불연속 지형;추력;측면 위어 Shallow-water flow;Approximate riemann solver;Discontinuous topography;Thrust;Side weir |
| Abstract |
The hydrostatic pressure, thrust, and wall reflection by a step were studied as the flow resistance due to the discontinuous topography by using the Hwang's scheme in calculating fluxes with an approximate Riemann solver. Compared with the broad-crested weir experiments, the result simulated by using the thrust was the best among them. Hwang's scheme with the thrust by a step was applied to the side weir experiment. The results of simulation agreed well with those of the experiment. Compared to the existing depth-integrated model, the accuracy was slightly lowered, but the running time was reduced to about 20 %. |