Work

Hydrodynamic Effects and Scour Protection of a Geotextile Mattress with a Floating Plate

Year: 2025

Type: article

Abstract: In this study, the evolution of the flow field near a Geotextile Mattress with a Floating Plate (GMFP) are numerically investigated, with a specific focus on the influence of the Froude number and the dynamic response of the floating plate. Key findings identify a critical Froude number that separates two protection regimes. Below this critical flow condition, the bottom vortex and the protective zone remain stable. Above it, the vortex contracts upstream, and the protection efficacy becomes substantial but diminished due to the competing effects of vortex development and a reduction in plate obstruction height. The bed shear stress over a considerable distance leeward of the GMFP is significantly reduced compared to unprotected conditions. Due to the blockage of the GMFP, upstream backup and downstream drawdown were observed in the water surface over the GMFP. These results provide valuable insights for the design and application of GMFPs, particularly in optimizing structural parameters to enhance protection effectiveness under varying flow conditions.

Source: Journal of Marine Science and Engineering

DOI: 10.3390/jmse13122215

Authors: Yehui Zhu, Yanhong Li, Liquan Xie

Institutions: University of Shanghai for Science and Technology, Shanghai Jiao Tong University, Tongji University

Language: English

Topic: Hydraulic flow and structures

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,137

Funders: National Natural Science Foundation of China, China Scholarship Council