Non-intrusive reduced-order modeling for multiphase porous media flows using Smolyak sparse grids
Non-intrusive reduced-order modeling for multiphase porous media flows using Smolyak sparse grids
复制标题
使用 Smolyak 稀疏网格对多相多孔介质流进行非侵入式降阶建模
DOI：
10.1002/fld.4263
复制
发表时间：
2017
影响因子：
1.8
通讯作者：
Muggeridge Ann
中科院分区：
文献类型：
--
作者：
Xiao Dunhui;Fang Fangxin;Pain Christopher C.;Salinas Pablo;Lin Zhi;Navon Ionel M.;Muggeridge Ann
在本文中，我们描述了一种使用 Smolyak 稀疏网格的多孔介质多相流的非侵入式还原方法。这是将基于 Smolyak 稀疏网格的非侵入式降阶建模 (NIROM) 应用于多孔介质多相流的首次尝试。这种用于多孔介质多相流的 NIROM 的优点在于它的非侵入性，这意味着它不需要修改完整模型的源代码。另一个新颖之处是它使用 Smolyak 稀疏网格来构造一组表示减少孔隙介质多相问题的超曲面。该NIROM是在非结构化网格控制体有限元多相模型框架下实现的。数值例子表明，NIROM 相对于高保真模型的精度得以保持，同时计算成本降低了几个数量级。版权所有 © 2016 约翰·威利父子有限公司
In this article, we describe a non‐intrusive reduction method for porous media multiphase flows using Smolyak sparse grids. This is the first attempt at applying such an non‐intrusive reduced‐order modelling (NIROM) based on Smolyak sparse grids to porous media multiphase flows. The advantage of this NIROM for porous media multiphase flows resides in that its non‐intrusiveness, which means it does not require modifications to the source code of full model. Another novelty is that it uses Smolyak sparse grids to construct a set of hypersurfaces representing the reduced‐porous media multiphase problem. This NIROM is implemented under the framework of an unstructured mesh control volume finite element multiphase model. Numerical examples show that the NIROM accuracy relative to the high‐fidelity model is maintained, whilst the computational cost is reduced by several orders of magnitude. Copyright © 2016 John Wiley & Sons, Ltd.