Eddy-Induced Dispersion of Sea Ice Floes at the Marginal Ice Zone

Ocean heat exchanges at the marginal ice zone (MIZ) play an important role in melting sea ice. Mixed-layer eddies transport heat and ice floes across the MIZ, facilitating the pack's access to warm waters. This study explores these frontal dynamics using disk-shaped floes coupled to an upper-ocean model simulating the sea ice edge. Numerical...

Improving the recovery efficiency of the Aquifer Storage and Recovery system in Hoorn

PWN is responsible for supplying sufficient quantities of high-quality water to its customers. The growing population and the effects of climate change, such as heat waves and droughts, are straining the capacity of the water supply network, especially during dry and warm periods when water demand increases. A significant portion of the drinking...

Time-lapse GPR full-waveform inversion to monitor heat tracers at the Krauthausen test site

Understanding solute and heat transport processes in aquifers is crucial for monitoring and protecting the groundwater critical zone. Crosshole ground-penetrating radar (GPR) is a useful method for enhancing transport characterization in aquifers. Particularly, GPR full-waveform inversion (FWI) can provide subsurface images with resolution at...

Ates Smart Grids: Optimal Use Of Subsurface Space In High Density Ates Areas

Aquifer Thermal Energy Storage (ATES) systems provide buildings with sustainable space heating and cooling by seasonally storing and recovering thermal energy in the subsurface. The increased use of ATES in Dutch cities resulted in dense use of ATES in urban aquifers, often up to congestion level. Because thermal interactions among neighbouring...

An axisymmetric non-hydrostatic model for double-diffusive water systems

The three-dimensional (3-D) modelling of water systems involving double-diffusive processes is challenging due to the large computation times required to solve the flow and transport of constituents. In 3-D systems that approach axisymmetry around a central location, computation times can be reduced by applying a 2-D axisymmetric model set-up....

Measuring and modelling salt and heat transport in low-land drainage canals: Flow and stratification effects of saline seepage

This thesis explores a new measuring approach to quantify the seepage flux from boils. Boils are preferential groundwater seeps and are a consequence of the groundwater flow that works its way through the soil matrix by creating vents of higher conductive material. In the Netherlands, boils often occur in deep polders (reclaimed lakes situated 4...

An axisymmetric non-hydrostatic model for double-diffusive water systems

The three-dimensional (3-D) modelling of water systems involving double-diffusive processes is challenging due to the large computation times required to solve the flow and transport of constituents. In systems that approach axisymmetry around a central location, computation times can be reduced by applying a quasi 3-D axisymmetric model setup....

Simulating heat transfer through the unsaturated zone of MAR systems: With an application to the MAR system at PWN

Consider a managed aquifer recharge system in the Netherlands where approximately 25 million cubic meters of pre-treated water is infiltrated and recovered annually for the purpose of disinfection, buffering, and attenuation of water quality. The system consists of a sequence of alternating, parallel elongated recharge basins and rows of...

The influence of fractures on geothermal heat production in the Roer Valley Graben

This thesis looks into the possibility to produce geothermal energy in the Roer Valley Graben. The locations in this area are limited due to the low permeability of the deep Triassic layers. Fractures can enhance the heat production by increasing the effective permeability and decrease the pressure that is needed to produce the heat. However,...

Warmtelozing in oppervlaktewater en uitwisseling met de atmosfeer: Een inventarisatie van rekenmethodieken en modellen

SOBEK landelijk waterkwaliteitsmodel

Literatuurstudie warmteverspreiding bij koelwaterstralen