A meshless generalized finite difference method for the closed-loop geothermal system

IF 4.1 2区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

Engineering Analysis with Boundary Elements Pub Date : 2025-10-10 DOI:10.1016/j.enganabound.2025.106482

Xiaotong Han , Lina Song , Cong Xie , Xiaoming He

引用次数: 0

Abstract

This study develops a meshless method to solve the closed-loop geothermal system. Unlike mesh-based methods that require additional interface terms, this method handles complex interface conditions in a simple and direct way by employing the Taylor series expansion in combination with the moving least squares approach. Moreover, to overcome the pressure oscillation problem in the model, an effective mixed boundary condition is introduced, without making any changes to the governing equations. Through the numerical cases, the method demonstrates the high accuracy and effectively simulates the target model.

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地热闭环系统的无网格广义有限差分法

本文提出了一种求解闭环地热系统的无网格方法。与需要附加接口项的基于网格的方法不同，该方法通过采用泰勒级数展开和移动最小二乘法相结合的方法，以简单直接的方式处理复杂的接口条件。为了克服模型中的压力振荡问题，在不改变控制方程的情况下，引入了有效的混合边界条件。数值算例表明，该方法具有较高的精度，能有效地模拟目标模型。

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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来源期刊

Engineering Analysis with Boundary Elements 工程技术-工程：综合

CiteScore

5.50

自引率

18.20%

发文量

368

审稿时长

56 days

期刊介绍： This journal is specifically dedicated to the dissemination of the latest developments of new engineering analysis techniques using boundary elements and other mesh reduction methods. Boundary element (BEM) and mesh reduction methods (MRM) are very active areas of research with the techniques being applied to solve increasingly complex problems. The journal stresses the importance of these applications as well as their computational aspects, reliability and robustness. The main criteria for publication will be the originality of the work being reported, its potential usefulness and applications of the methods to new fields. In addition to regular issues, the journal publishes a series of special issues dealing with specific areas of current research. The journal has, for many years, provided a channel of communication between academics and industrial researchers working in mesh reduction methods Fields Covered: • Boundary Element Methods (BEM) • Mesh Reduction Methods (MRM) • Meshless Methods • Integral Equations • Applications of BEM/MRM in Engineering • Numerical Methods related to BEM/MRM • Computational Techniques • Combination of Different Methods • Advanced Formulations.