Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 432 for “"Sediment transport"”.
-
Sediment transport in storm sewers
… into account the effect of roughness in the sediment transport in sewers. This model was later tested against experimental data obtained from a test rig. The rig had a pipe which was specially fabricated in two halves so that it could be divided to coat the interior with uniform sand grains …
-
Contaminated sediment transport in Boston Harbor
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1991.
-
Effects of rigid stems on sediment transport
… modifies flow structure, flow resistance, sediment transport and morphology. Each single modification has been largely studied, but the knowledge on the mutual relationships are still limited. This project faces a part of these still-unknown aspects by considering the case of rigid and …
-
Sediment Transport and Wind Flow Around Hummocks
… between vegetation density, shear stress and sediment transport surrounding hummocks, a type of small dune. While qualitative observations and holistic, large-scale experiments regarding vegetation density and sediment transport have confirmed a negative correlation, fewer papers have …
-
Shallow sea tidal friction and sediment transport
… features or of the suspended and bed-load sediment concentrations. The particular linear sand ridge investigated was the South Falls bank. The tidal flow was measured using current meter rigs on and off the bank. Analytical and numerical modelling of the hydrodynamic equations was compared …
-
Bed Morphology and Sediment Transport Under Oscillatory Flow
The experiments focused on two aspects of the bed morphology: the study of the ripple planform geometry under a broad range of flow conditions, and the effect of orbital velocities on the ripple size under long water excursions. Regarding the planform geometry of the ripples, the results showed …
-
Flow, sediment transport and bedforms under combined flows
… experimental work in the Large Oscillatory Water-Sediment Tunnel (LOWST) in order to address this gap in knowledge. The LOWST has a test section 12.5 m long, 0.8 m wide and 1.2 m high, with the oscillatory motion generated by three pistons. Unidirectional currents were superimposed on these water …
-
Impacts of vegetation-generated turbulence on sediment transport
… of these habitats, restoration projects import sediment to eroded areas. The success of the restoration depends on its ability to retain sediment; therefore restoration design requires a good understanding of sediment transport within vegetated landscapes. However, there is currently no …
-
Modeling of nearshore hydrodynamics for sediment transport calculations
… simple model accurately predicts long-shore sediment transport along long, straight beaches, while cross-shore transport predictions differ from observations. A better prediction of cross-shore transport requires improvement of the hydrodynamic model. We first contrast Tajima's model with …
-
Forward and Inverse Modeling of Tsunami Sediment Transport
… frequency and magnitude. Numerical modeling of sediment transport during a tsunami is important interdisciplinary research to estimate the frequency and magnitude of past events and quantitative prediction of future events. The goal of this dissertation is to develop robust, accurate, and …
-
Wave-induced sediment transport on an estuarine intertidal flat
… tides are the primary processes responsible for sediment entrainment on estuarine intertidal flats, however a detailed understanding of the temporal and spatial variability of wave processes, and the way in which these control estuarine sediment transport, is lacking. The aim of this thesis is to …
-
Sediment Transport and Pathogen Indicator Modeling in Lake Pontchartrain
… this, Estuarine, coastal and ocean model with sediment (ECOMSED) was implemented to simulate various processes that would determine the fate and transport of fecal coliform bacteria in the lake. The processes included hydrodynamics, waves, sediment transport, and the decay and transport of the …
-
Modelling fine sediment transport over an immobile gravel bed
Fine-grained sediment represents a significant component of the total transport load in most fluvial systems around the world that are not limited to the alluvial rivers with sandy beds. A variety of natural or human actions, such as fire, logging, flow diversion, road construction, and urban or …
-
Hydrodynamic and sediment transport modeling of deltaic sediment processes
… bar and distributary channel formation and sediment transport on an adverse slope could be simulated with a 2D finite element sediment transport model. The models used were RMA2 and SED2D modules of the TABS-MD model suite. A finite element mesh of the lower Atchafalaya River and the delta …
-
Analysis of the Sediment Transport Capabilities of FESWMS FST2DH
<p>Many numeric models simulate the transport of sediment within rivers and streams. Engineers use such models to monitor the overall condition of a river or stream and to analyze the impact that the aggradation and degradation of sediment has on the stability of bridge piers and other features …
-
Similarity of sediment transport by water and air currents.
Massachusetts Institute of Technology. Dept. of Civil Engineering. Thesis. 1970. Civ.E.
-
Observed circulation and inferred sediment transport in Hudson Submarine Canyon
… wave activity is apparently responsible for sediment sorting in the canyon head; the internal waves become more energetic as the sediment grain size increases. Below the thermocline, the tidal oscillations vary in amplitude with the phases of the moon; the observed deposition of mud can …
-
Near-bed hydrodynamics and sediment transport in the swash zone
… coastal zone because of hydrodynamic and sediment transport processes that affect the morphology and ecology of the broader littoral area. The understanding of these swash-zone processes is poor and suffers from a lack of detailed measurements under natural conditions. A new comprehensive …
Page 1 of 22