Wave and Vegetation Modeling

Oral

1550 - Modeling Effects Of Vegetation On Setup And Runup Of Random Waves

Presenting Author(s)

• LZ

  Ling Zhu

  Louisiana State University

Additional Author #1(s)

• QC

  Qin Chen, PhD

  Professor
  Northeastern University

Additional Author #2(s)

• NJ

  Navid Jafari, Ph.D.

  Assistant Professor
  Louisiana State University

Additional Author #3(s)

• 

  Julie Rosati, PhD, PE

  Technical Director
  U.S. Army Corps of Engineers

Additional Author #4(s)

• 

  Yan Ding, PhD

  Research Civil Engineer
  US Army Corps of Engineers (USACE)

The effects of vegetation on wave setup and runup are investigated by numerical experiments. A parametric model of the phase-averaged depth-integrated drag force is proposed and implemented into CSHORE. The model is tested using measured wave setup in the laboratory with vegetation. Numerical results show that the modeled wave setup agrees well with the measurements. Vegetation also leads to considerable reduction in wave runup. The reduction rates strongly depend on the wave conditions and vegetation properties. A larger vegetation field and taller plant height will lead to greater reductions in wave height, wave setup and wave runup.