Author(s)

H. Tanaka & Q. Huimin

Abstract

Numerical simulation of sand terrace formation in front of a river mouth H. Tanaka, Q. Huimin Water Resources Engineering Division, Asian Institute of Technology, G.P.O. Box 2754, Bangkok 10501, Thailand ABSTRACT The process of the formation of a sand terrace in front of a river mouth is simulated numerically by means of a finite difference method. A leap-frog explicit scheme is applied to predict two moving boundaries: a free surface and a bed surface. Comparisons of the sand terrace profile are made between experimental measurements and calculated results. It is concluded that the present numerical model is remarkably successful in predicting sand terrace formation. INTRODUCTION At a river mouth, sand spit is often formed and sometimes intrudes into the mouth due to predominant wave action. During a large flood, the sand spit will be flushed to form a sand terrace in front of the river mouth. Some research w

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