Development of an infinite element boundary to model gravity for subsurface civil engineering applications
Development of an infinite element boundary to model gravity for subsurface civil engineering applications
复制标题
开发无限元边界来模拟地下土木工程应用的重力
DOI:
10.1002/nag.3027
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发表时间:
2019
影响因子:
4
通讯作者:
Haji T
中科院分区:
文献类型:
--
作者:
Haji T
The accurate modelling of gravity is of crucial importance for a variety of issues including, but not restricted to, the identification of buried objects. Gravity is an unbounded problem, which causes challenges when applying numerical models, i..e.., it results in computational difficulties when specifying the relevant boundary conditions. In order to address this, previous research has tended to generate artificial boundary conditions, e.g., truncating the simulated domain and adding many unrealistic zero‐density layers, which introduces more unknown parameters and unnecessarily excessive computational time. In order to overcome such inaccuracies, this paper proposes an innovative development of the finite element modelling technique, which represents a step change in the field of gravity forward modelling. A comprehensive formulation of an infinite element to reproduce the far‐field boundary effect using only one layer of infinite elements is presented. The developed model considerably reduces the computational time while obtaining high degrees of accuracy. The model is validated against the exact solution of the problem, and its results show an excellent performance. The proposed method can significantly improve the postprocessing and interpretation stages of data analysis relevant to micro‐gravity sensors. The new method is applied to subsurface civil engineering although its applicability is manifold.
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影响因子:
2.8
作者:
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通讯作者:
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影响因子:
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作者:
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通讯作者:
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DOI:
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期刊:
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影响因子:
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通讯作者:
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影响因子:
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通讯作者:
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DOI:
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发表时间:
2017
期刊:
arXiv: Geophysics
影响因子:
--
作者:
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通讯作者:
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