Wave dissipation effects of a floating membrane

• Floating, flexible membranes experience significant wave-induced drift due to momentum changes caused by wave reflections. • Viscous damping can be captured effectively by modelling the membrane as a porous medium governed by Darcy’s law. • The classical Haskind relations are extended to include damping, offering generalized relations for porous structures. We investigate how a floating, flexible membrane dissipates wave energy and generates wave-induced forces by combining linear potential-fl