Storm Surge in Estuary

Oral

1034 - Surface-Groundwater Flow Numerical Model For Coastal Barrier Beach

Presenting Author(s)

• 

  Eranda Perera

  PhD student
  University Of Nottingham Ningbo China

Additional Author #1(s)

• 

  Fangfang Zhu, PhD

  Assistant Professor
  University of Nottingham Ningbo China

Additional Author #2(s)

• ND

  Nicholas Dodd

Additional Author #3(s)

• RB

  Riccardo Briganti

  University of Nottingham

Additional Author #4(s)

• CB

  Chris Blenkinsopp

  Senior Lecturer
  University of Bath

A comprehensive groundwater flow numerical model which solves Laplace’s equation is coupled with surface flow model which solves Non-linear Shallow Water Equations. The model showed good agreement against results from prototype-scale BARDEX II experiment, firstly without waves and later with waves. Without waves, pore water flow below the barrier beach was always directed from higher potential head to lower potential head. However, as waves are switched on, pore water flow reversed direction towards the sea in the case where sea level > lagoon level, suggesting that wave action is more dominant than potential head difference in driving pore water.