Hydrodynamics and bed morphology in a double-layered partially vegetated mobile bed channel DOI
Pritam Kumar,

Abhishek Kumar,

Anurag Sharma

et al.

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(3)

Published: March 1, 2025

This study investigates the hydrodynamics and sediment transport in a double-layered partially vegetated mobile bed channel, focusing on impact of submerged vegetation with submergence ratio 61.53% 30.77% flow dynamics morphology. Experiments were conducted straight, tilting rectangular flume staggered double layered covering half channel width. The three dimensional time-averaged velocity components, turbulent intensities, secondary current, kinetic energy, Reynolds shear stress are measured analyzed using contour plots along outcomes reveal that induces significant momentum exchange between non-vegetated sections. In section, dampens streamwise intensity near bed, promoting deposition enhancing stability. Momentum transfer at interface strengthens shear, increasing turbulence leading to greater erosion. Negative streamwise-vertical indicates helical flow, while transverse-vertical peaks bed. Flow diversion intensifies erosion high-energy vegetation-induced drag decelerates causing transition deeper section. Double-layered rivers or canals is more effective stabilizing materials. These findings provide critical insight for river restoration management, emphasizing necessity integrated management strategies balance across heterogeneous environments.

Language: Английский

Hydrodynamics and bed morphology in a double-layered partially vegetated mobile bed channel DOI
Pritam Kumar,

Abhishek Kumar,

Anurag Sharma

et al.

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(3)

Published: March 1, 2025

This study investigates the hydrodynamics and sediment transport in a double-layered partially vegetated mobile bed channel, focusing on impact of submerged vegetation with submergence ratio 61.53% 30.77% flow dynamics morphology. Experiments were conducted straight, tilting rectangular flume staggered double layered covering half channel width. The three dimensional time-averaged velocity components, turbulent intensities, secondary current, kinetic energy, Reynolds shear stress are measured analyzed using contour plots along outcomes reveal that induces significant momentum exchange between non-vegetated sections. In section, dampens streamwise intensity near bed, promoting deposition enhancing stability. Momentum transfer at interface strengthens shear, increasing turbulence leading to greater erosion. Negative streamwise-vertical indicates helical flow, while transverse-vertical peaks bed. Flow diversion intensifies erosion high-energy vegetation-induced drag decelerates causing transition deeper section. Double-layered rivers or canals is more effective stabilizing materials. These findings provide critical insight for river restoration management, emphasizing necessity integrated management strategies balance across heterogeneous environments.

Language: Английский

Citations

0