Time-domain analysis of gravity dam-reservoir interaction using high-order doubly asymptotic open boundary

Authors:
Xiang Wang;Feng Jin;Suriyon Prempramote;Chongmin Song
Affiliations:
Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, China;Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, China;School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia;School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia
Venue:
Computers and Structures
Year:
2011

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Abstract

A procedure for the time-domain analysis of gravity dam-reservoir interaction is proposed. The dam and a part of the reservoir with irregular geometry are modeled with finite elements. A high-order doubly asymptotic open boundary condition is developed to model the remaining part of the reservoir simplified as a semi-infinite layer of constant depth. This open boundary is temporally local, stable and converges rapidly as the order increases. It is directly coupled with the commercial software ABAQUS by using a sequential staggered implicit-implicit partition algorithm. Numerical examples demonstrate the high accuracy and long-time stability of the proposed technique.