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  4. River Bed Morphodynamics: Metamodeling, Reliability Analysis, and Visualization in a Virtual Environment
 
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2017
Book Article
Title

River Bed Morphodynamics: Metamodeling, Reliability Analysis, and Visualization in a Virtual Environment

Abstract
Numerical simulations of river bed evolution (morphodynamics) can be used for evaluating river engineering concepts and efficient operation of waterways. Reliability analysis is used to detect the origin of uncertainties, to track their propagation in the model and to evaluate their contribution to the result of the modeling. We have developed a new approach for the reliability analysis of morphohydrodynamical simulations, including a fast interpolation of simulation results with radial basis functions (RBF) and an efficient quantile estimator based on quasi-Monte Carlo sampling. Realistic examples are used to test the efficiency of the approach. An interactive 3D virtual environment has been employed for visual exploration of the results. The developed virtual environment application allows for a detailed inspection of the numerical model, including the evolution of the water level, river bed profiles and their quantiles. In this way one achieves a full immersion into the model space and an understanding of morphohydrodynamical processes in an intuitive way.
Author(s)
Clees, Tanja  orcid-logo
Nikitin, Igor  
Nikitina, Lialia  
Pott, Sabine  
Klimenko, Stanislav
Mainwork
Scientific Computing and Algorithms in Industrial Simulations  
DOI
10.1007/978-3-319-62458-7_3
Language
English
Fraunhofer-Institut für Algorithmen und Wissenschaftliches Rechnen SCAI  
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