Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR024361 |
Accelerating and Parallelizing Lagrangian Simulations of Mixing-Limited Reactive Transport | |
Engdahl, Nicholas B.1; Schmidt, Michael J.2,3; Benson, David A.2 | |
2019-04-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
卷号 | 55期号:4页码:3556-3566 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Recent advances in random walk particle tracking have enabled direct simulation of mixing and reactions by allowing the particles to interact with each other using a multipoint mass transfer scheme. The mass transfer scheme allows separation of mixing and spreading processes, among other advantages, but it is computationally expensive because its speed depends on the number of interacting particle pairs. This note explores methods for relieving the computational bottleneck caused by the mass transfer step, and we use these algorithms to develop a new parallel, interacting particle model. The new model is a combination of a sparse search algorithm and a novel domain decomposition scheme, both of which offer significant speedup relative to the reference case-even when they are executed serially. We combine the strengths of these methods to create a parallel particle scheme that is highly accurate and efficient with run times that scale as 1/P for a fixed number of particles, where P is the number of computational cores (equivalently, subdomains, in this work) being used. The new parallel model is a significant advance because it enables efficient simulation of large particle ensembles that are needed for environmental simulations and also because it can naturally pair with parallel geochemical solvers to create a practical Lagrangian tool for simulating mixing and reactions in complex chemical systems. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000468597900053 |
WOS关键词 | STOCHASTIC-ANALYSIS ; POROUS-MEDIA ; MACRODISPERSION |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/182258 |
专题 | 资源环境科学 |
作者单位 | 1.Washington State Univ, Civil & Environm Engn, Pullman, WA 99164 USA; 2.Colorado Sch Mines, Hydrol Sci & Engn, Golden, CO 80401 USA; 3.Colorado Sch Mines, Appl Math & Stat, Golden, CO 80401 USA |
推荐引用方式 GB/T 7714 | Engdahl, Nicholas B.,Schmidt, Michael J.,Benson, David A.. Accelerating and Parallelizing Lagrangian Simulations of Mixing-Limited Reactive Transport[J]. WATER RESOURCES RESEARCH,2019,55(4):3556-3566. |
APA | Engdahl, Nicholas B.,Schmidt, Michael J.,&Benson, David A..(2019).Accelerating and Parallelizing Lagrangian Simulations of Mixing-Limited Reactive Transport.WATER RESOURCES RESEARCH,55(4),3556-3566. |
MLA | Engdahl, Nicholas B.,et al."Accelerating and Parallelizing Lagrangian Simulations of Mixing-Limited Reactive Transport".WATER RESOURCES RESEARCH 55.4(2019):3556-3566. |
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