Wave in deck loads using Lagrangian Momentum Absorption (LMA) scheme

When the water surface elevation exceeds the deck elevation and inundates the deck of fixed
offshore structures, the resulting loads which are known as wave-in-deck loading leads to a
step change in the loads acting on the structure. Given its importance, for predicting WID, a
number of approaches exist, such as the well-known drag formulation and Kaplan’s model.
However, an important shortcoming of these models is the large number of empirical
coefficients that ought to be obtained experimentally. A recently proposed model, known as
Lagrangian Momentum Absorption (LMA) scheme overcomes these limitations by basing it
upon the momentum dissipation that occurs during WID loading, removing the need for a large
number of empirically tuned coefficients. This model can incorporate the details of the
structure including its’ porosity.