Modeling and Simulation of Standing Wave Configurations for Outflow Improvement and Minimizing Undesired Recirculation

Schwalbe J, Tur B, Kniesburges S, Neuß N, Stingl M, Keck T, Buff J, Döllinger M (2025)

Publication Type: Journal article

Publication year: 2025

Journal

Applied Sciences MDPI

Book Volume: 15

Article Number: 3127

Journal Issue: 6

DOI: 10.3390/app15063127

Abstract

River surfing has evolved from natural rivers to artificial standing waves, like the Fuchslochwelle in Nuremberg, where optimizing wave quality and safety remains a challenge. Key issues include recirculation zones that pose risks, particularly at higher inflows. This study addresses safety and performance improvements by introducing geometric modifications to reduce recirculation zones. Using STAR-CCM+ simulations, 16 configurations of baffles and inlays were analyzed. A 3D-CAD model of the Fuchslochwelle was developed to test symmetrical and asymmetrical configurations, focusing on reducing vorticity. Results showed that baffles placed 2 m from the inlay reduced recirculation zones by over 50%. Asymmetrical setups, combining wall and inlay baffles, also proved effective. Following simulations, a baffle was installed at 3 m, enhancing safety and quality. Previously, inflows above 7.5 m3/s caused dangerous backflow, requiring surfers to swim or dive to escape turbulence. With the baffle, safe operation increased to 9 m3/s, a 20% improvement, making the system suitable for surfers of all skill levels. These finding provide a novel approach to enhancing flow dynamics, applicable to a wide range of artificial standing waves. The valuable insights gained enable operators to optimize the dynamics and accessibility through geometric modifications while ensuring safety for users.

Authors with CRIS profile

Bogac Tur Lehrstuhl für Hals-Nasen-Ohrenheilkunde Stefan Kniesburges Nicolas Neuß Lehrstuhl für Angewandte Mathematik (Wissenschaftliches Rechnen) Michael Stingl Lehrstuhl für Angewandte Mathematik (Kontinuierliche Optimierung) Michael Döllinger Professur für Computational Medicine

Involved external institutions

Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR) / German Aerospace Center DE Germany (DE) Nürnberger Dauerwelle e. V. DE Germany (DE)

How to cite

APA:

Schwalbe, J., Tur, B., Kniesburges, S., Neuß, N., Stingl, M., Keck, T.,... Döllinger, M. (2025). Modeling and Simulation of Standing Wave Configurations for Outflow Improvement and Minimizing Undesired Recirculation. Applied Sciences, 15(6). https://doi.org/10.3390/app15063127

MLA:

Schwalbe, Julien, et al. "Modeling and Simulation of Standing Wave Configurations for Outflow Improvement and Minimizing Undesired Recirculation." Applied Sciences 15.6 (2025).

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