A Heuristic Method for Measurement Site Selection in Sewer Systems

Vonach, Tanja; Tscheikner-Gratl, Franz; Rauch, Wolfgang; Kleidorfer, Manfred

doi:10.3390/w10020122

Cited by 9 publications

(12 citation statements)

References 30 publications

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“…The basis for the used methodology is an existing hydrodynamic model of the case study's urban drainage network (Kleidorfer et al 2014;Muschalla et al 2015;Tscheikner-Gratl et al 2016a;Tscheikner-Gratl et al 2016b;Vonach et al 2018). The performance of different scenarios was assessed using the Storm Water Management Model (SWMM 5.1.012) software tool (Burger et al 2014;Gironás et al 2010), which is widely used (e.g.…”

Section: Methodsmentioning

confidence: 99%

“…Calibration scenarios I, II and III representing a different number and location of measurement sites were established by considering weak points in the uncalibrated model (pipes where the agreement of simulated water level courses between the uncalibrated model and the model of the reference scenario is low) and considering the operator's empirical knowledge. Basic considerations regarding this heuristic scenario development approach can be found in Vonach et al (2018). Figure 3 exemplifies abstractions, which were made during the procedure.…”

Section: Calibration Proceduresmentioning

confidence: 99%

“…To avoid a further deficiency in the identifiability of the parameters, subcatchments are clustered, according to their initially estimated values, into three groups distinguishing the imperviousness and four groups differentiated by their width (the ratio between width and area, i.e. their shape), see also Vonach et al (2018). Each cluster has its own factor being multiplied with the initial width or imperviousness.…”

Section: Calibration Proceduresmentioning

confidence: 99%

“…Kleidorfer et al (2009b), investigated the influence of an increasing number of measurement stations for the calibration of conceptual sewer models. The effects of locating calibration points for hydrodynamic models were investigated by Vonach et al (2018), resulting in a proposed heuristics for measurement site placement concluding with the intention of further research to improve the used methodology. With this work, we want to enhance the understanding of these effects by investigating the influence of a different number and different combinations of calibration points for hydrodynamic drainage models.…”

Section: Introductionmentioning

confidence: 99%

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An Insight to the Cornucopia of Possibilities in Calibration Data Collection

Vonach

Kleidorfer

Rauch

et al. 2018

Water Resour Manage

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The calibration of models for urban drainage systems has become more and more important as especially the usage of detailed models has increased considerably over the last years as the basis for planning and design. Still the effects originating from the choice of data used for model calibration are little known and advice on planning measurement campaigns for model calibration is limited, especially for small and medium-sized municipalities. The choice of measurement sites (number and location) within a sewer system is affecting the robustness of the calibration and in consequence the assessment of the modelled system behaviour. This paper discusses the calibration of a hydrologic-hydrodynamic model using the representative example of a small municipality. Different calibration scenarios were created using a modelbased approach, focusing on varying availability of in-sewer measurement data. To assess the performance of different scenarios and validate the respective models, different model outputs were compared. The different calibration scenarios resulted in high variations in the model performances. The number and location of used calibration points influence model performance significantly. Predicted CSO volumes deviate from a set of given reference values in ranges between 1% and 253% for one, −21% to −5% for two and 1% to 237% for five used calibration points, depending on the rainfall data input. Consequently, the design of measurement campaigns for calibration data is a very sensitive decision in the modelling process. The model performance further influences design and decision-making processes, which are then perceptible in economic and functional aspects.

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Section: Methodsmentioning

confidence: 99%

Section: Calibration Proceduresmentioning

confidence: 99%

Section: Calibration Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

An Insight to the Cornucopia of Possibilities in Calibration Data Collection

Vonach

Kleidorfer

Rauch

et al. 2018

Water Resour Manage

Self Cite

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“…The identification of such bifurcations is based on an algorithm originating in graph theory to allow for efficient calculation. Such algorithms analyze the network structure rather than actual simulation results, as, e.g., done by [37]. For an introduction of graph theory applied to sewer systems, see e.g., [38], who use graph theory for the identification of critical network elements with respect to system malfunctioning.…”

Section: Overflow Locationsmentioning

confidence: 99%

A Methodology for the Design of RTC Strategies for Combined Sewer Networks

Kröll

Weemaes

Impe

et al. 2018

Water

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While real-time control (RTC) is considered an established means of performance improvement for existing urban drainage networks, practical applications are frequently only documented for large case studies, and many operators are still reluctant to adopt RTC into their own systems. The purpose of the presented study is to highlight the potential of RTC also for smaller networks by the example of five representative catchments in Flanders, Belgium, and to demonstrate a novel methodology for the automated design of control strategies. This method analyses a given sewer network for the identification of suitable existing and new control locations. The gathered information is used in a second step for the design of control algorithms according to generic control concepts documented in the literature, such as e.g., “Equal Filling Degree”. The resulting RTC strategy uses sensible default parameters, and can form a starting point for further refinement through optimization or manual tuning. With a modelled total combined sewer overflow volume reduction of 20% to 50%, the created strategies showed generally good performance for the tested catchments. The method proved to be applicable for all tested networks. Its use for the real-life implementation of RTC is currently under way for 10 other Flemish cases.

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