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

<table>Ratios of the amplitude of surface wave to that of internal wave for superharmonic interactions (solid lines for second-order waves with various wavenumbers and dash lines for first-order waves).</table>

Mathematical Problems in Engineering

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Figure 8

Figure 8: On the Study of Second-Order Wave Theory and Its Convergence for a Two-Fluid System 