Tidal Meanders in the Ameland Basin: A study to the underlying processes in the evolution of tidal meanders

The fairway connecting Holwerd and Nes forms the main transport route between Friesland and Ameland (the Dutch Wadden Sea). It consists of several tidal channels that funnel the majority of the tidal currents propagating through the tidal basin. Over the past decades, several channel bends have expanded leading to a fairway length-increase of...

Design of a Simple Wake Model for the Wind Farm Layout Optimization Considering the Wake Meandering Effect

The design of the optimal layout of the wind farm is crucial to minimize the cost of energy produced by the wind farm. This requires an accurate wake model to simulate the wake effect on the annual energy yield of the wind farm. On the other hand, the wake model must be very simple in order to limit the duration of the layout optimisation...

Combining a Physics-based Model and Spatial Interpolation of Scarce Bed Topography Data in Meandering Alluvial Rivers

All human life is dependent on fresh water and activities related to monitoring its availability have become crucial for financial and survival reasons. Most rivers are being constantly investigated today by both the private and public sector using various means. In advanced countries, the researches cover extensively the riverbed in order to...

Estimating arsenic concentrations in Bihar (India), a geostatistical approach using DEM data

Bihar is a densely populated area located in the Middle Ganga Plain (MGP) in India. The Ganges' sinuous nature in the MGP created a vast amount of point bar structures within the floodplain. In 2003 it was discovered that high arsenic concentrations are present in the shallow groundwater aquifers, especially in the elevated point bars. According...

Programmawijzigingen door voortschrijdend inzicht

De ziekenhuissector heeft de afgelopen decennia een enorme transformatie doorgemaakt. De transformatie is het gevolg van een groot scala aan ontwikkelingen die hebben plaatsgevonden. De mijlpaal binnen de ontwikkelingen ligt in 2006, door de verandering in de wet- en regelgeving. Zo is de oude Wet Ziekenhuisvoorzieningen (WZv) geleidelijk...

Modeling Fluvial Reservoir Architecture using Flumy Process

Modeling sedimentary heterogeneities of reservoir rocks is typically performed using geostatistical methods. Geostatistics reproduce the spatial distribution of heterogeneities based on available data. There are several geostatistical methods to build 3D reservoir model simulations, such as the object-based or variogram-based methods. MINES...

Rip currents: A laboratory study of a rip current in the presence of a submerged reef

Detailed laboratory measurements of the wave and current field induced by bi-chromatic waves incident on an artificial surfing reef are presented. Strong wave focussing occurs on the surfing reef. Both PTV and in-situ measurements are reported that show the presence of a strong rip current flowing oblique off-shore. Observed water level set-up...

Modelling of planimetric/historical changes of the Geul river (The Netherlands)

This report presents the analyses and conclusions of a study on the planform evolution of the Geul river in the last 80 years. The results are compared with those of studies carried out by the Vrije Universiteit Amsterdam (VUA). The Geul river is to tributary of the Meuse River (The Netherlands). It has been straightened and protected against...

Planform changes and overbank flow in meandering rivers: The river Allier

In this study the river migration model MIANDRAS has been applied to simulations of the planform changes of the river Allier, a tributary of the river Loire in France. The Allier is a very dynamic and natural river system with braided and meandering river sections. Two meandering reaches of the Allier, located between Varennes-sur-Allier and...

Time-dependent near-bank beddeformation in meandering rivers

Due to the relatively high computational costs related to the use of 2D models the purpose of this study was to develop a one-dimensional mathematical model that can give a fair estimation of the near-bank deformation and the bedtopography in meandering rivers. The bedtopography is characterized by a point bar-pool configuration that can also be...

Numeriek model voor de ontwikkeling van vrije meanders in de Tana-rivier

Vrij meanderende rivieren veroorzaken grote problemen voor de aangrenzende gebieden, vanwege de vaak onvoorspelbare en onverwachte veranderingen in de oeverlijnen in betrekkelijk korte tijd. Een van die rivieren is de Tana-rivier in Kenia, waarvan de benedenloop door z'n sterk meanderende. karakter een bedreiging vormt voor diverse in cultuur...