Interaction Between Submerged Flexible Vegetation and an Open Channel Water Flow

Abstract

Submerged vegetation plays a crucial role in the aquatic ecosystem. It affects the distribution of flow velocity, creates complex vortex structures near the canopy, and enhances mass and momentum exchange. In this seminar, we will discuss a three-dimensional, full-freedom highly flexible submerged vegetation-water flow interaction model that effectively addresses the challenge of coupling water flow with vegetation that has large deformation and complex shape in numerical simulations. In our discussion, we will delve into the formation of the mixing layer which occurs due to the presence of submerged vegetation. We will also explore the differences in coherent turbulent structure, vegetation waving motion, and scalar transport under varying flow conditions, vegetation distribution density, and relative submergence depth.

Bio

Jianyu Wang is a Postdoctoral Fellow at the Center for Turbulence Research at Stanford University, working with Professor Catherine Gorlé on numerical simulation of the atmosphere turbulence. He obtained his BSc and PhD degrees from Tsinghua University. His PhD research was supervised by Professor Hongwei Fang, focusing on the canopy flow in natural rivers.