The Adaptation of a Current Flume to a Wave-Current Flume for Coastal Studies

• Type: Article in International Conference Proceedings Book
• Date: 2023-09

Authors

João Chambel (Author) Other; Tiago Ferradosa (Author) FEUP; Filipe Miranda (Author) FEUP; Ana Bento (Author) FEUP; Francisco Taveira Pinto (Author) FEUP; Paulo Rosa Santos (Author) FEUP

Conference proceedings International

Title: Proceedings of the IAHR World Congress

Pages: 379-387

40th IAHR World Congress, 2023

Vienna, 21 August 2023 through 25 August 2023

Indexing

Scopus - 1 Citation

Scientific classification

CORDIS: Technological sciences

FOS: Engineering and technology

Other information

Authenticus ID: P-010-6EC

DOI: 10.3850/978-90-833476-1-5_iahr40wc-p0005-cd

Abstract (EN): To analyze soil-fluid-structure interactions, physical modelling is performed at laboratory facilities that vary from current flumes to wave basins. Studies of coastal protection, scour at offshore foundations, and hydrodynamic/geotechnical behavior of marine energy technologies, among others, require the use of wave and current loadings. In current-only flumes, adding waves can be quite challenging. This implies the installation of wave generation systems and passive/active absorbing systems, functioning perfectly as a whole without damaging the existing conditions. This research presents a practical study of the adaptation of a current flume to a wave-current flume at the Hydraulics Laboratory of the Faculty of Engineering of the University of Porto. The flume has been adapted to accommodate a bypass system for the current¿s inlet, a wavemaker ¿ wet-back wave-paddle by HR Wallingford (UK), and an absorption beach at the downstream side of the flume. The infrastructure¿s adaptation enabled the reproduction of solitary, regular, and irregular long-crested waves for a maximum water depth of 0.7 m with a significant wave height of 0.10 m ¿ with the potential to reproduce waves with significant wave heights of up to 0.25 m. With the adaptation works, the analysis of flow conditions and wave reflection coefficient results for a set of wave-current flow conditions is presented. Results demonstrate that the setup enables proper research on soil-fluid-structure interactions for offshore conditions. The reflection coefficient was reduced below 15 % ¿ 0.5 to 1 Hz peak frequency range, which can be optimized with novel absorption systems. © 2023 IAHR - International Association for Hydro-Environment Engineering and Research.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8