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Abstract
Abstract： To study the water hammer phenomena of the largescale water conveyance tunnel, a threedimensional water hammer analysis method was proposed based on the ALE (arbitrary LagrangianEulerian) fluid structure interaction technique. The validity of the method was verified by comparing the simulation and experimental results of a case. Based on the multiscale simulation technique, the soilstructurewater coupled threedimensional nonlinear finite element model of a largescale water conveyance tunnel was established. Besides, its calculation was accomplished using the proposed method in combination with the mixed time explicit integration algorithm and its parallel technique. The results show that water hammer pressure decreases with the increase of valve closing time and shortening of tunnel length, and that the lining structure bearing maximum influence under water hammer is near the outlet of the tunnel.
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Received: 08 December 2014
Published: 29 January 2016
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