نتایج جستجو برای: longshore sediment transport lst
تعداد نتایج: 307451 فیلتر نتایج به سال:
Low-energy, non-tidal lake beaches are known to be subject longshore morphodynamics, but little is about how they driven by wind and wave-driven currents. Lake Markermeer a shallow (∼4 m deep), wind-dominated lake, of approximately 700 km2. A gradient in wind-induced water level set-up at the leeward shore induces flow from shallower deeper parts thereby generating large-scale, horizontal circu...
In this paper, development of a semi-two- dimensional mathematical model called SDAR is introduced. The model is composed of two principal modules of hydraulics and sediment transport. The newly developed SDAR model has a number of capabilities including determination of sediment transport rate, aggradation - degradation calculation, longitudinal profile and lateral cross–sectional variation s...
In this research, the element free Galerkin is implemented to simulate the bed-load sediment transport equations in two dimensions. In this method, which is a meshless method, the computational domain is discretized by a set of arbitrarily scattered nodes and there is no need to use meshes, elements or any other connectivity information in nodes. The hydrodynamical part of sediment transport eq...
Abstract. Beach erosion at the unprotected downdrift end of a groin is common with waves approaching structure obliquely. This phenomenon has often occurred on side natural groins east coast South Korea during high in winter months. The resulting planform assumes distinctive crenulate shape maximum indentation point landward erosion. An analytical model employed to study beach rock Jeongdongjin...
Most of river engineering problems are complicated and need to be analyzed by three dimensional models of flow and sediment transport. Considering the fact that computers and numerical methods with great ability of flow and sediment transport simulation are developing quickly, using numerical modeling by engineers is inevitable. Nevertheless, before application, numerical models need to be veri...
Many sediment transport equations have been developed for estimation of the river sediment materials during the past four decades. There are significant differences in the results from these equations when applied to compute sediment transport for a specific river. Therefore, application of an equation for estimation of a river sediment load is not an easy task. In this study, 12 important sedi...
Many sediment transport equations have been developed for estimation of the river sediment materials during the past four decades. There are significant differences in the results from these equations when applied to compute sediment transport for a specific river. Therefore, application of an equation for estimation of a river sediment load is not an easy task. In this study, 12 important sedi...
Introducing a Relationship for Estimation of the Sediment Transport Rate through Rockfill Structures
Rockfill dams are accounted as useful measures in watershed management projects. How-ever, the sediment transport through the rockfill materials, could impact their lifetime duration. Previously, researches have been conducted to describe the various hydraulically issues of the flow passing through these structures However; there is no general relationship to estimate the sediment transport rat...
Flow and sediment transport processes are different and more complex in coarse-bed rivers than in sand-bed rivers. The main goal of the present study is to evaluate different modes of sediment transport using different hydrometric and hydraulic methods, and to address the major uncertainties. Four river reaches were selected as representatives of coarse-bed rivers in the Northwest of Iran. A se...
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