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- W4300703422 abstract "We consider a finite volume method for a well-driven fluid flow in a porous medium. Due to the singularity of the well, modeling in the near-well region with standard numerical schemes results in a completely wrong total well flux and an inaccurate hydraulic head. Local grid refinement can help, but it comes at computational cost. In this article we propose two methods to address well singularity. In the first method the flux through well faces is corrected using a logarithmic function, in a way related to the Peaceman correction. Coupling this correction with a second-order accurate two-point scheme gives a greatly improved total well flux, but the resulting scheme is still not even first order accurate on coarse grids. In the second method fluxes in the near-well region are corrected by representing the hydraulic head as a sum of a logarithmic and a linear function. This scheme is second-order accurate." @default.
- W4300703422 created "2022-10-04" @default.
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- W4300703422 date "2013-12-09" @default.
- W4300703422 modified "2023-09-27" @default.
- W4300703422 title "Second-order accurate finite volume method for well-driven flows" @default.
- W4300703422 doi "https://doi.org/10.48550/arxiv.1312.2388" @default.
- W4300703422 hasPublicationYear "2013" @default.
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