Locally Filtered Transport for computational efficiency in multi-component advection-reaction models

Locally Filtered Transport for computational efficiency in multi-component advection-reaction models
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局部过滤传输可提高多组分平流反应模型的计算效率

DOI:
10.1016/j.envsoft.2018.01.003
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发表时间:
2018
期刊:
Environ. Model. Softw.
影响因子:
--
通讯作者:
B. Reuter
B. Reuter
中科院分区:
--
文献类型:
--
作者:
H. Hajduk;B.R. Hodges;V. Aizinger;B. Reuter

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本文介绍了数值输运模式的局部过滤输运(LFT)方法。提出了一种新的方法,在生态系统模型中,需要几十到几百个组分浓度的运输,以减少计算成本的运输计算在几乎均匀的浓度的地区。所提出的方法是局部质量守恒的间断Galerkin有限元格式的基础上,它是使用数值算例,包括对流反应生态系统模拟与一个简单的氮,浮游植物和浮游动物(NPZ)模型的方法的性能进行了说明。
This work introduces the Locally Filtered Transport (LFT) method for numerical transport models. Locally turning off the transport computation in areas of nearly uniform concentration is proposed as a new approach for reducing computational cost in ecosystem models that require transport of tens to hundreds of constituent concentrations. The proposed method is locally mass conservative just as the discontinuous Galerkin finite element scheme it is based on. The performance of the method is illustrated using numerical examples including an advection-reaction ecosystem simulation with a simple nitrogen, phytoplankton, and zooplankton (NPZ) model.
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