多种海啸触发类型的流固耦合数值模拟初步研究  

The primary numerical simulation research on multi-type incitements of tsunami by the method of coupling interaction between Lagrange entity to ALE entity

作　　者：刘双庆[1] 朱元清[2] 薛艳[3] 温艳玲[2] 

机构地区：[1]兰州地震研究所,中国甘肃730000 [2]上海市地震局,中国上海200062 [3]中国地震台网中心

出　　处：《地震地磁观测与研究》2007年第5期130-137,共8页Seismological and Geomagnetic Observation and Research

基　　金：国家自然科学基金(40576022);地震科学联合基金(106078)项目资助

摘　　要：利用有限元流固耦合理论来模拟二维、三维海啸触发阶段的动态过程,将海啸可能的触发类型分离出来独自模拟分析,并解决了触发过程中,流固计算可能失效而面临的问题,从形变图,压强图以及能量图多侧面地表达出流固耦合在海啸触发模拟中的可行性。由于不需要进行浅水波近似,因此所使用的计算方法和结果可推到较广的使用范围。In this paper, we utilize the calculating method of coupling interaction between Lagrange entity to ALE entity and general common point approach to simulate the multi-type incitements of tsunami. As the complexity of incitement, it is separated into some two dimension models and a three dimension model that including asteroid, landslide, subside and bed runup, for individual simulation studies. Due to solving the negative volume problem and pseu- do-oscillatory, we find the results of deformation of water surface, pressure and energy evolution are reliable when compared with the analytical resolution and as without the presupposition of shallow water theory, the method with we simulating can provide more adaptive practicality.

关 键 词：海啸触发 流固耦合 沙漏控制 阻尼控制 ALE 

分 类 号：P731.25[天文地球—海洋科学]