Optimal salinity and water level control of water courses using Model Predictive Control

Worldwide, delta areas are under stress due to climate change. With rising sea<br/>levels and decreasing freshwater availability, surface water salinization due to<br/>groundwater exfiltration is expected to increase in these low-lying areas. To<br/>counteract surface water salinization, freshwater diverted from rivers is used to flush...

Technological Environmentality: Conceptualizing Technology as a Mediating Milieu

After several technological revolutions in which technologies became ever more present in our daily lives, the digital technologies that are currently being developed are actually fading away from sight. Information and Communication Technologies (ICTs) are not only embedded in devices that we explicitly “use” but increasingly become an...

A greedy algorithm for optimal sensor placement to estimate salinity in polder networks

We present a systematic approach for salinity sensor placement in a polder network, where the objective is to estimate the unmeasured salinity levels in the main polder channels. We formulate this problem as optimization of the estimated salinity levels using root mean square error (RMSE) as the "goodness of fit" measure. Starting from a...

A Heuristic Approach to Effective Sensor Placement for Salinity State Reconstruction in a Low-Lying Polder

Model Predictive Control of Salinity and Water Level in a Hypothetical Polder Ditch: Is it Possible to Use the Discretized Linearized Physical Equations for Optimization

Surface water salinization in deltaic areas due to saline groundwater exfiltration is an important issue. Fresh water diverted from the rivers is used for flushing the canals and the ditches in coastal areas to remove the low quality saline surface water mixed with saline groundwater. Worldwide, deltaic areas are under stress due to climate...

Model Predictive Control of Salinity in a Polder Ditch under High Saline Groundwater Exfiltration Conditions: A Test Case

Surface water salinization in deltaic areas due to saline groundwater exfiltration is an important issue. Saline surface water will not be appropriate for drinking water production, agricultural and industrial use, and therefore, freshwater diverted from rivers is used for flushing the canals and ditches in coastal areas. The effects of climate...

Polder Flushing: Model Predictive Control of Flushing Operations to Effective and Real Time Control of Salinity in Polders

More than 35% of the world’s population live within 100 km of the coast. Groundwater resources in these areas are the main source for domestic, industrial and agricultural use. Worldwide, deltaic areas are under stress due to climate change, sea level increase and decrease in fresh water availability. In addition, in deltaic coastal areas around...

Offset Free Model Predictive Control of an Open Water Reach

Model predictive control (MPC) is a powerful tool which is used more and more to managing water systems such as reservoirs over a short-term prediction horizon. However, due to unknown disturbances present in the water system and other uncertainties, there is always a mismatch between the model and the actual system. To overcome this mismatch...

De kunstmatige natuur van de mens: Over techniek, de menselijke conditie en idealen

Influence of Design Parameters on Vertical Motions of Trawler Hull Forms in Head Seas

An investigation of turbulent combustion in spark-ignition engines