坝体—库水相互作用的流固耦合分析  

Fluid-solid Coupling Analysis for Dam-reservoir Interaction

作　　者：陈江[1] 张少杰[1] 闵兴鑫[1] 

机构地区：[1]四川大学水电学院,四川成都610065

出　　处：《西南科技大学学报》2009年第1期13-19,共7页Journal of Southwest University of Science and Technology

基　　金：国家自然科学基金重大研究计划资助项目(90715026)

摘　　要：采用Ansys中的声学流体单元模拟库水,进行了某重力坝与库水的流固耦合分析。考虑了库底吸收系数对坝库耦合系统动力响应的影响,计算结果表明:库底吸收性显著降低了动水压力,吸收系数越大,效果越明显;位移反应也有所减小。比较了Ansys与Adina的计算结果及效率,结果表明:两者的计算结果基本一致,Adina的计算效率高于Ansys,但Ansys的前后处理较Adina高效。Fluid-solid coupling analysis was carried out for a gravity dam and reservoir, the reservoir was simulated by acoustic fluid element in Ansys. The influence of reservoir-bottom absorption coefficient to dynamic response of dam-reservoir coupling system was considered. The results show that the absorption capability reduces the hydrodynamic pressure significantly. The bigger the absorption eoeffcient, the more obvious the effect is, and the displacement response also decreases slightly. The computational results and effcieney were compared between Ansys and Adina. They both have accordant computational results. The computational effeieney of Adina is higher than Ansys, but Ansys has higher efficiency in pre-proeessing and post-processing.

关 键 词：流固耦合 动水压力 地震反应 混凝土坝 

分 类 号：TV642[水利工程—水利水电工程] O353.4[理学—流体力学]