A model of isotope transport in the unsaturated zone, case study

IF 0.5 Q3 ENGINEERING, MULTIDISCIPLINARY

Acta Polytechnica Pub Date : 2022-08-31 DOI:10.14311/ap.2022.62.0427

J. Chudoba, J. Královcová, J. Landa, J. Maryska, J. Říha

引用次数: 1

Abstract

This work deals with a groundwater flow and solute transport model in the near-surface (predominantly unsaturated) zone. The model is implemented so that it allows simulations of contamination transport from a source located in a geological environment of a rock massif. The groundwater flow model is based on Richards’ equation. Evaporation is computed using the Hamon model. The transport model is able to simulate advection, diffusion, sorption and radioactive decay. Besides the basic model concept, the article also discusses potential cases that could lead to non-physical solutions. On three selected examples, which include, for example, rapidly changing boundary conditions, the article shows the solvability of such cases with the proposed model without unwanted effects, such as negative concentrations or oscillations of solution, that do not correspond to inputs.

查看原文本刊更多论文

不饱和带同位素输运模型，实例研究

这项工作涉及近地表（主要是非饱和）带的地下水流动和溶质运移模型。该模型的实现使其能够模拟位于岩体地质环境中的污染源的污染传输。地下水流动模型基于Richards方程。蒸发量采用哈蒙模型计算。该输运模型能够模拟平流、扩散、吸附和放射性衰变。除了基本的模型概念，文章还讨论了可能导致非物理解决方案的潜在案例。在三个选定的例子中，例如，包括快速变化的边界条件，文章展示了这种情况的可解性，所提出的模型没有不必要的影响，如负浓度或溶液振荡，这些影响与输入不对应。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Acta Polytechnica ENGINEERING, MULTIDISCIPLINARY-

CiteScore

1.90

自引率

12.50%

发文量

审稿时长

24 weeks

期刊介绍： Acta Polytechnica is a scientific journal published by CTU in Prague. The main title, Acta Polytechnica, is accompanied by the subtitle Journal of Advanced Engineering, which defines the scope of the journal more precisely - Acta Polytechnica covers a wide spectrum of engineering topics, physics and mathematics. Our aim is to be a high-quality multi-disciplinary journal publishing the results of basic research and also applied research. We place emphasis on the quality of all published papers. The journal should also serve as a bridge between basic research in natural sciences and applied research in all technical disciplines. The innovative research results published by young researchers or by postdoctoral fellows, and also the high-quality papers by researchers from the international scientific community, reflect the good position of CTU in the World University Rankings. We hope that you will ﬁnd our journal interesting, and that it will serve as a valuable source of scientiﬁc information.