Influence of Hydraulic Model Complexity-a new publication by our employees

Influence of Hydraulic Model Complexity-a new publication by our employees

We present another publication by our colleagues: Artur Zajkowski and Łukasz Wysocki – PhD students of the Białystok University of Technology, prepared in cooperation with researchers of the BUT.

The article “Influence of Hydraulic Model Complexity on Results of Water Age and Quality Simulation in Municipal Water Supply Systems” was published in the scientific journal “Sustainability”.

What is the text about?

The age of water in the municipal water supply system is one of the main factors influencing water quality. To create a good quality hydraulic model, one must achieve a high level of calibration accuracy with real life measurement data. Before we start building our model, we must decide on the model’s level of detail, that is, its complexity. We must know if skeletonization of the network graph and different hydraulic timesteps have an influence on simulation results. This study strives to prove that this decision can lead to unforeseen problems during the calibration process, thus making it impossible to achieve the required calibration precision. In order to prove this, two different model variants were created with different levels of graph detail, and simulation data results were used to determine which model variant is best suited to achieve the highest fidelity simulation results. Following this, the chosen model was run with different hydraulic timestep settings, which made it possible to showcase the large influence this setting has on achieved results.



Sustainability is an international, cross-disciplinary, scholarly, peer-reviewed and open access journal of environmental, cultural, economic, and social sustainability of human beings. It provides an advanced forum for studies related to sustainability and sustainable development, and is published semimonthly online by MDPI.


Artur Zajkowski – Network modeling specialist
Łukasz Wysocki – Head of the Network Modeling Department

Graduates of the Białystok University of Technology in the field of Environmental Engineering, PhD students at Doctors School of the Białystok University of Technology . They have many years of experience in hydraulic modeling of networks for water supply companies all over Poland. They also specialize in water and sewage network monitoring, network management concepts and the determination of DMA and PMA zones. They conduct trainings in hydraulic modeling of networks for water companies. Participants of numerous trainings in the field of network modeling and GIS software from various manufacturers. Enthusiasts of modern technologies and innovations in environmental engineering.

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