Abstract
Free surface water waves generated by plunging of debris flow cause devastating damage on human life. In this study, a numerical scheme for interaction of debris flow and free surface water wave is developed based on shallow water approximation. Numerical scheme for interaction of debris flow and free surface wave is suggested newly. Generation of waves byplunging of debris flow is highly non-linear phenomena. Classical CIP method and 1st orderup-wind scheme mixed with 2nd order central derivative scheme are adopted to simulate collision of two initially separated fluid (debris flow and still water). Numerical results for interaction of debris flow and generated water wave quite satisfactory and reasonable.
