气候变化领域集成服务门户(CCPortal): Direct simulation of non-additive properties on unstructured grids

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DOI	10.1016/j.advwatres.2020.103665
	Direct simulation of non-additive properties on unstructured grids
	Mourlanette P.; Biver P.; Renard P.; Nœtinger B.; Caumon G.; Perrier Y.A.
发表日期	2020
ISSN	0309-1708
卷号	143
英文摘要	Uncertainties related to permeability heterogeneity can be estimated using geostatistical simulation methods. Usually, these methods are applied on regular grids with cells of constant size, whereas unstructured grids are more flexible to honor geological structures and offer local refinements for fluid-flow simulations. However, cells of different sizes require to account for the support dependency of permeability statistics (support effect). This paper presents a novel workflow based on the power averaging technique. The averaging exponent ω is estimated using a response surface calibrated from numerical upscaling experiments. Using spectral turning bands, permeability is simulated on points in each unstructured cell, and later averaged with a local value of ω that depends on the cell size and shape. The method is illustrated on a synthetic case. The simulation of a tracer experiment is used to compare this novel geostatistical simulation method with a conventional approach based on a fine scale Cartesian grid. The results show the consistency of both the simulated permeability fields and the tracer breakthrough curves. The computational cost is much lower than the conventional approach based on a pressure-solver upscaling. © 2020 The Authors
关键词	Cells Flow of fluids Uncertainty analysis Averaging technique Conventional approach Geological structures Geostatistical simulation methods Non-additive properties Permeability fields Permeability heterogeneity Tracer breakthrough curves Cytology computer simulation fluid flow heterogeneity numerical model permeability uncertainty analysis
语种	英语
来源机构	Advances in Water Resources
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/131740
推荐引用方式 GB/T 7714	Mourlanette P.,Biver P.,Renard P.,et al. Direct simulation of non-additive properties on unstructured grids[J]. Advances in Water Resources,2020,143.
APA	Mourlanette P.,Biver P.,Renard P.,Nœtinger B.,Caumon G.,&Perrier Y.A..(2020).Direct simulation of non-additive properties on unstructured grids.,143.
MLA	Mourlanette P.,et al."Direct simulation of non-additive properties on unstructured grids".143(2020).