2026-06-11T10:06:31Z https://meral.edu.mm/oai

oai:meral.edu.mm:recid/00007200 2021-12-13T02:47:41Z 1608151108672:1608152118915 user-mmu

Numerical simulation on sedimentation in Yangon River and its navigation channel TOE TOE AUNG Takenori.SHIMOZONO Akio.OKAYASU A shallow area called, Inner Bar,near Yangon Port is a major obstacle for Yangon Rivertraffic.In order to obtain basic information for these dimentation problem, characteristics offlow, sediment transport and bedlevel changes were investigated for Yangon River and its navigation channel by means of numerical simulation. 3D Princeton Ocean Model（POM） with a wetting and drying scheme was used to cope with large tidal ranges for predicting the river and tidal flows.Topographic data,upstream river discharges and tidal elevations at the river mouth were given as the inputdata for the models.Computed depth-averaged velocity was verified against field data of NELSON（2000）.Bed shear stress was evaluated from bottom velocity calculated by the 3Dflow model.Bed level change was simulated with a2D sediment transport model for different seasonal and tidal conditions.Sediment diameter used in the calculation was obtained by sand sampling from material of Inner Bar. The simulation clearly showed large amount of sand deposition at Inner Bar and some other areas in the river.Estimated amount of sedimentation around Inner Bar was roughly equivalent to that of bottom material dredged by Myanmar Port Authority to maintain the depth. 2013-12-30 http://hdl.handle.net/20.500.12678/0000007200 https://meral.edu.mm/records/7200