On the Study of Second-Order Wave Theory and Its Convergence for a Two-Fluid System

<table>Ratios of the second-order amplitude to the first-order amplitude for Stokes waves with various thickness ratios. Solid lines for internal waves and dash lines for surface waves. </table>

Mathematical Problems in Engineering

fig4

Figure 4

Figure 4: On the Study of Second-Order Wave Theory and Its Convergence for a Two-Fluid System 