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Adaptive Finite Element Methods In Geodynamics:convection Dominated Mid-ocean Ridge And Subduction Zone Simulations

机译:地球动力学中的自适应有限元方法:以对流为主的中洋脊和俯冲带模拟

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Purpose - The purpose of this paper is to present an adaptive finite element procedure that improves the quality of convection dominated mid-ocean ridge (MOR) and subduction zone (SZ) simulations in geodynamics.rnDesign/methodology/approach - The method adapts the mesh automatically around regions of high-solution gradient,yielding enhanced resolution of the associated flow features.The approach utilizes an automatic,unstructured mesh generator and a finite element flow solver.Mesh adaptation is accomplished through mesh regeneration, employing information provided by an interpolation-based local error indicator,obtained from the computed solution on an existing mesh.Findings - The proposed methodology works remarkably well at.improving solution accuracy for both MOR and SZ simulations.Furthermore,the method is computationally highly efficient.Originality/value - To date,successful goal-orientated/error-guided grid adaptation techniques have,to the knowledge,not been utilized within the field of geodynamics.This paper presents the first true geodynamical application of such methods.
机译:目的-本文的目的是提出一种自适应有限元程序,以改善对流占主导地位的中洋海脊(MOR)和俯冲带(SZ)在地球动力学中的模拟。rn设计/方法/方法-该方法适用于网格该方法利用自动的,非结构化的网格生成器和有限元流解算器来实现网格自适应,并通过网格再生实现,并利用基于插值的信息来实现网格自适应。局部误差指标,从现有网格上的计算解中获得。发现-所提出的方法非常有效。提高MOR和SZ模拟的解精度。此外,该方法在计算上非常高效。原始数据/值-迄今为止,据了解,尚未成功使用基于目标/错误引导的网格自适应技术本文介绍了这种方法的第一个真正的地球动力学应用。

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