University of Twente Student Theses

Login

The sensitivity of spatiotemporal inundation patterns to the dike breach location

Leerdam, Tjerk-Jan van (2023) The sensitivity of spatiotemporal inundation patterns to the dike breach location.

[img] PDF
11MB
Abstract:Hydrodynamic models are often used to simulate inundation patterns for evacuation planning. Yet, hydrodynamic models are affected by uncertainties in, among others, the dike breach location. Sensitivity analyses are often used to assess the effect of the variability in uncertain input factors on the output of hydrodynamic models. The aim of this study is to assess the spatiotemporal sensitivity of inundation patterns to the dike breach location. Dike breaches were simulated at 15 potential dike breach locations using a set-up subgrid-based hydrodynamic model. The computational grid of this model was determined based on a sensitivity analysis. This analysis showed the importance of correctly schematizing underpasses in the computational grid for accurately simulating the inundation pattern. In the analysis of the simulation results it was found that in lower-lying and centrally located areas, the inundation pattern is only slightly sensitive to the dike breach location and for a short period. In more elevated areas which are less centrally located and in small compartments which are completely enclosed by obstacles, the inundation pattern is significantly sensitive to the dike breach location and for a longer period. Furthermore, in general, the sensitivity of the inundation pattern decreases over time.
Item Type:Essay (Master)
Clients:
Nelen & Schuurmans, Utrecht, The Netherlands
Faculty:ET: Engineering Technology
Subject:56 civil engineering
Programme:Civil Engineering and Management MSc (60026)
Link to this item:https://purl.utwente.nl/essays/97002
Export this item as:BibTeX
EndNote
HTML Citation
Reference Manager

 

Repository Staff Only: item control page