断裂多孔介质中的示踪剂传输：岩石基质中示踪剂浓度的分布与时域随机行走算法的实施

IF 2.6 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Nuclear Engineering and Technology Pub Date : 2024-08-05 DOI:10.1016/j.net.2024.08.007

Qing Zhao, Shuo Meng, Longcheng Liu

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引用次数: 0

摘要

本研究提出了一种新的时域随机漫步（TDRW）算法，用于估算岩石基质内的示踪剂分布轮廓。新算法的开发源于单一断裂-基质系统分析解的统计特性，其中计算并记录了粒子在某一时刻的位置。在确定每个粒子的位置后，所得到的分布将直接提供示踪剂分布轮廓的估计值。此外，新开发的算法可以很容易地扩展到更复杂的断裂-矩阵系统中，其中也可以使用任意注入边界条件。为了验证新算法的准确性和适用性，我们进行了三次基准模拟，发现不同方法的结果完全相同。尽管如此，新算法的计算需求较低，因此计算效率更高。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Tracer transport in fractured porous media: Distribution of tracer concentration within the rock matrix and the implementation of time domain random walk algorithm

In this work, a new Time Domain Random Walk (TDRW) algorithm is proposed to estimate the tracer distribution profile within the rock matrix. The development of the new algorithm stems from the statistical properties of the analytical solution to a single fracture-matrix system, in which the particle position at a certain time is calculated and recorded. With the position of each particle determined, the resulting distribution will then provide an estimate of the tracer distribution profile directly. In addition, the newly developed algorithm can readily be extended to a case of more complicated fracture-matrix system, in which an arbitrary injection boundary condition may also be used. To verify the accuracy and applicability of the new algorithm, three benchmark simulations are made, in which the results of different approaches are found to be identical. Nevertheless, the new algorithm has a higher computational efficiency, due to its lower calculation demand.

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来源期刊

Nuclear Engineering and Technology 工程技术-核科学技术

CiteScore

4.80

自引率

7.40%

发文量

431

审稿时长

3.5 months

期刊介绍： Nuclear Engineering and Technology (NET), an international journal of the Korean Nuclear Society (KNS), publishes peer-reviewed papers on original research, ideas and developments in all areas of the field of nuclear science and technology. NET bimonthly publishes original articles, reviews, and technical notes. The journal is listed in the Science Citation Index Expanded (SCIE) of Thomson Reuters. NET covers all fields for peaceful utilization of nuclear energy and radiation as follows: 1) Reactor Physics 2) Thermal Hydraulics 3) Nuclear Safety 4) Nuclear I&C 5) Nuclear Physics, Fusion, and Laser Technology 6) Nuclear Fuel Cycle and Radioactive Waste Management 7) Nuclear Fuel and Reactor Materials 8) Radiation Application 9) Radiation Protection 10) Nuclear Structural Analysis and Plant Management & Maintenance 11) Nuclear Policy, Economics, and Human Resource Development