Wind wave growth in the viscous regime
Jiarong Wu, Luc Deike
Abstract
How water surface waves grow under wind forcing has long been an interesting and challenging question. For short gravity-capillary waves, the viscous effects are important but have not been well studied. In this paper, we simulate the wind-wave growth by directly solving the two-phase Navier-Stokes equations. The numerical method features a momentum conserving scheme, interface reconstruction using Volume of Fluid, and adaptive mesh refinement (AMR). As a result, we observe concurrent growth of the irrotational traveling wave and the rotational drift layer (current). The growth rate of the wave and the evolution of the drift layer under different forcing parameters are discussed respectively.
Topics & Concepts
Conservative vector fieldForcing (mathematics)Stokes driftMechanicsCapillary waveMomentum (technical analysis)Volume of fluid methodCurrent (fluid)PhysicsGeologyClassical mechanicsMeteorologyGeophysicsSurface waveFlow (mathematics)CompressibilityAtmospheric sciencesOpticsThermodynamicsEconomicsFinanceOcean Waves and Remote SensingCoastal and Marine DynamicsOceanographic and Atmospheric Processes