宾汉非牛顿流体对水平井非静态过滤反问题的数值求解

IF 0.8 Q2 MATHEMATICS Lobachevskii Journal of Mathematics Pub Date : 2024-08-28 DOI:10.1134/s1995080224602224
M. Kh. Khairullin, E. R. Badertdinova
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引用次数: 0

摘要

摘要 研究了宾汉非牛顿流体对水平井的非稳态过滤。实验结果表明,当这类液体在多孔介质中以低压力梯度流动时,会出现偏离线性达西定律的现象。宾厄姆非牛顿流体在多孔介质中流动的一个特点是,只有当压力梯度达到某个临界值--极限压力梯度--时,才会出现明显的过滤现象。本文给出了宾汉非牛顿流体流向水平井时确定过滤参数的反系数问题的公式。井上测得的压力变化曲线被用作初始信息。为了对反系数问题进行数值求解,提出了一种基于正则化方法的计算算法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Numerical Solution of the Inverse Problem of Non-stationary Filtration of Bingham Non-Newtonian Fluid to a Horizontal Well

Abstract

Unsteady filtration of a Bingham non-Newtonian fluid to a horizontal well is considered. The experimental results show that when such liquids flow in porous media at low pressure gradients, deviations from the linear Darcy law appear. A feature of the movement of Bingham non-Newtonian fluids in a porous medium is the fact that filtration becomes noticeable only after the pressure gradient reaches a certain critical value—the limiting pressure gradient. The formulation of the inverse coefficient problem for determining filtration parameters during the flow of Bingham non-Newtonian fluid to a horizontal well is given. Pressure change curves measured at the well are used as initial information. To numerically solve the inverse coefficient problem, a computational algorithm based on regularization methods is proposed.

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来源期刊
CiteScore
1.50
自引率
42.90%
发文量
127
期刊介绍: Lobachevskii Journal of Mathematics is an international peer reviewed journal published in collaboration with the Russian Academy of Sciences and Kazan Federal University. The journal covers mathematical topics associated with the name of famous Russian mathematician Nikolai Lobachevsky (Lobachevskii). The journal publishes research articles on geometry and topology, algebra, complex analysis, functional analysis, differential equations and mathematical physics, probability theory and stochastic processes, computational mathematics, mathematical modeling, numerical methods and program complexes, computer science, optimal control, and theory of algorithms as well as applied mathematics. The journal welcomes manuscripts from all countries in the English language.
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