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Efficient Finite Element Modeling of Shallow Geothermal Systems

机译:浅层地热系统的高效有限元建模

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This paper presents a finite element modeling technique for double U-tube borehole heat exchangers (BHE) and the surrounding soil mass. Focus is placed on presenting numerical analyses describing the capability of a BHE model, previously introduced by the author, to simulate three dimensional heat transfer processes in multiple borehole heat exchangers embedded in multi layer soil mass, in a computationally efficient manner. Geothermal problems which require very fine meshes, of the order of millions of finite elements, can be simulated using coarse meshes, of the order of few hundreds to few thousands elements. Accordingly, significant reduction of CPU time is gained, rendering thus the suitability of the model for utilization in engineering practice.
机译:本文提出了一种用于双U型管钻孔热交换器(BHE)和周围土壤质量的有限元建模技术。焦点呈现描述描述前面引入的BHE模型的能力的数值分析,以计算多层土壤质量的多层热交换器中的三维传热过程,以计算有效的方式模拟多层散热器。可以使用粗网格模拟数百万有限元的数百万有限元的啮齿物质的地热问题可以使用粗糙的网格来模拟数百至数千元的元素。因此,获得了CPU时间的显着降低,因此渲染了模型在工程实践中利用的适用性。

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