A new solver for granular avalanche simulation： Indoor experiment verification and field scale case study

作     者：XiaoLiang Wang JiaChun Li 

作者机构：Key Laboratory for Mechanics in Fluid Solid Coupling Systems Institute of Mechanics Chinese Academy of Sciences Beijing 100190 China School of Engineering Science University of Chinese Academy of Sciences Beijing 100049 China 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)

年 卷 期：2017年第60卷第12期

页      面：45-55页

核心收录：

学科分类：0820[工学-石油与天然气工程] 07[理学] 070601[理学-气象学] 08[工学] 0706[理学-大气科学] 082002[工学-油气田开发工程] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11602278,and 11432015) the Strategic Priority Research Program of Chinese Academy of Sciences(Grant No.XDB22040203) the LMFS Foundation for Young Scientists 

主　　题：avalanche landslide WAF TVD 

摘      要：A new solver based on the high-resolution scheme with novel treatments of source terms and interface capture for the Savage-Hutter model is developed to simulate granular avalanche flows. The capability to simulate flow spread and deposit processes is verified through indoor experiments of a two-dimensional granular avalanche. Parameter studies show that reduction in bed friction enhances runout efficiency, and that lower earth pressure restraints enlarge the deposit spread. The April 9, 2000,Yigong avalanche in Tibet, China, is simulated as a case study by this new solver. The predicted results, including evolution process, deposit spread, and hazard impacts, generally agree with site observations. It is concluded that the new solver for the Savage-Hutter equation provides a comprehensive software platform for granular avalanche simulation at both experimental and field scales. In particular, the solver can be a valuable tool for providing necessary information for hazard forecasts, disaster mitigation, and countermeasure decisions in mountainous areas.