MODELING REACTIVE MULTIPHASE FLOW AND TRANSPORT OF CONCENTRATED SOLUTIONS

被引：12
|
作者：
Zhang, Guoxiang [1 ]
Spycher, Nicolas [1 ]
Sonnenthal, Eric [1 ]
Steefel, Carl [1 ]
Xu, Tianfu [1 ]
机构：
[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA
来源：
NUCLEAR TECHNOLOGY | 2008年 / 164卷 / 02期
关键词：
Yucca Mountain; Pitzer model; dryout;
D O I：
10.13182/NT08-A4018
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
A Pitzer ion-interaction model for concentrated aqueous solutions was added to the reactive multiphase flow and transport code TOUGHREACT The model is described and verified against published experimental data and the geochemical code EQ3/6. The model is used to simulate water-rock-gas interactions caused by boiling and evaporation within and around nuclear waste emplacement tunnels at the proposed high-level waste repository at Yucca Mountain, Nevada. The coupled thermal, hydrological, and chemical processes considered consist of water and air/vapor flow, evaporation, boiling, condensation, solute and gas transport, formation of highly concentrated brines, precipitation of deliquescent salts, generation of acid gases, and vapor-pressure lowering caused by the high salinity of the concentrated brine.
引用
收藏
页码：180 / 195
页数：16
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