ThreeDimensional Simulation of Water Hammer of LargeScale Water Conveyance Tunnel

Abstract

Abstract: Abstract： To study the water hammer phenomena of the largescale water conveyance tunnel, a threedimensional water hammer analysis method was proposed based on the ALE (arbitrary LagrangianEulerian) fluid structure interaction technique. The validity of the method was verified by comparing the simulation and experimental results of a case. Based on the multiscale simulation technique, the soilstructurewater coupled threedimensional nonlinear finite element model of a largescale 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.

Key words: water conveyance tunnel, water hammer, arbitrary LagrangianEulerian (ALE), fluid structure interaction, multiscale simulation, mixed time explicit integration, parallel computing

CLC Number:

U 459.6

WANG Xiaoqinga,b，JIN Xianlonga,b，CAO Yuana. ThreeDimensional Simulation of Water Hammer of LargeScale Water Conveyance Tunnel[J]. Journal of Shanghai Jiaotong University, 2016, 50(01): 98-102.

References

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