Wave and Vegetation Modeling

Oral

1451 - Recent Advances In Modeling Wave Attenuation By Vegetation

Presenting Author(s)

• QC

  Qin Chen, PhD

  Professor
  Northeastern University

Additional Author #1(s)

• LZ

  Ling Zhu

  Louisiana State University

Additional Author #2(s)

• AC

  Agnimitro Chakrabarti

Additional Author #3(s)

• SB

  Steve Brandt

The modeling of wave attenuation by vegetation can be micro-scale, such as the vegetation-resolved large eddy simulation (LES) under idealized conditions, meso-scale by incorporating Morison-type quadratic drag into the momentum equations, or macro-scale by adding a vegetation-induced energy sink to the energy balance equation. This paper investigates the canopy-averaged bulk drag coefficient from a micro-scale LES model and the calibrated drag coefficient from a meso-scale model based on the Reynolds-averaged Navier-Stokes equations. By comparing the drag coefficients in micro-, meso- and macro-scale models, a better understanding of the effects of plant flexibility and wave nonlinearity on wave-vegetation interactions is obtained.