Turbulence Kinetic Energy and High-Order Moments of Velocity Fluctuations of Flows in the Presence of Submerged Vegetation in Pools

The flow in arid and semi-arid regions changes significantly during seasons, letting many vegetation patches develop different parts of rivers. In the presence aquatic plants streams, structures have resulted. When water level increases these rivers, influences turbulent structures, which may considerably change estimation key hydraulic parameters. results earlier investigations indicated that a wide range submerged non-submerged hydrodynamic features flows rivers streams. present investigation, two pools with various slopes entry exit sections were used to conduct eight independent experiment runs. addition, patch over entire pool section has been set up investigate effects on pools. effect 5 10 degrees for both entrance structure investigated. Considering aspect ratios 2.0 2.7, distributions velocity, Reynolds normal shear stresses, turbulence intensities, kinetic energy (TKE), quadrant analysis, spectral analysis studied at trailing edge along an artificial pool. Results show that, large (10 degrees), TKE distribution profiles no specific form. However, values convex-shaped pattern maximum value near bed when are small (5 degrees). showed ejections sweeps govern coherent motions geometry, entrance, validation power function compared flatbed.