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Che-Wei Chang

Che-Wei Chang

Che-Wei Chang
Environmental Fluid Mechanics & Hydrology
School of Civil & Environmental Engineering
Cornell University

Current Research

My current research involves studying waves through a coastal forest region. 

The wave propagation through vegetation and the related hydrodynamics have been widely studied in various aspects. It has been proved that coastal forests are effective to dissipate wave energy and can serve as a shore protection. In our group, we have already investigated long surface waves of small amplitude through vegetation belts with different bathymetries and forest configurations. 

As an extension, I study the linear waves of intermediate depth through a circular forest. Multi-scale (homogenization) analysis is used to derive the effective governing equations for the macro-scale problem. The micro-scale boundary value problem for each cell is solved numerically. Eddy viscosity is introduced to include the effect of turbulence, which is generated between cylinders, and the consequent dissipation of wave energy. We are now also working with IH Cantabria in Spain on the related experiments. 

The ongoing research is considering weakly nonlinear waves with shallow water condition through forest.

Research Interests 

  • Wave through coastal forests 
  • Wave-structure interactions 
  • Tsunami waves 
  • Sediment transport and particle motion 
  • Debris flow

Selected Awards & Honors 

  • DeFrees Fellowship, Cornell University (2013 summer) 
  • Olin Fellowship, Cornell University (2012-2013) 
  • G.V. Loganathan Memorial Fellowship, Virginia Tech (2011-2012)
  • Honorary Member of the Phi Tau Phi Scholastic Honor Society of the Republic of China 
  • Scholarship of Sinotech Engineering Consultants, INC., Taiwan 

Previous Works

  • Department of Civil and Environmental Engineering, Virginia Tech  “Flow-induced particle movement under smooth to rough boundary conditions: A force-time history formulation 
  • Hydrotech Research Institute, National Taiwan University  “The study of total watershed production of landslide induced debris flows” 
  • Department of Civil Engineering, National Taiwan University Master Thesis “Applying Rotating Viscometer with Theoretical Development to Calibrate Rheological Parameters”, 2008.