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We investigate the spectral properties of a mixed discrete formulation based on mimetic finite differences for flow in the bulk matrix and finite volumes for the fractures, and present an approximation of the factors in a set of approximate block factorization preconditioners that accelerates convergence of iterative solvers applied to the resulting discrete system. Numerical tests on significant three-dimensional cases have assessed the properties of the proposed preconditioners.<\/jats:p>","DOI":"10.1007\/s10915-020-01372-0","type":"journal-article","created":{"date-parts":[[2020,12,11]],"date-time":"2020-12-11T10:04:42Z","timestamp":1607681082000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Preconditioning Techniques for the Numerical Solution of Flow in Fractured Porous Media"],"prefix":"10.1007","volume":"86","author":[{"given":"Paola F.","family":"Antonietti","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jacopo","family":"De Ponti","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2628-1683","authenticated-orcid":false,"given":"Luca","family":"Formaggia","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anna","family":"Scotti","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2020,12,11]]},"reference":[{"issue":"3\/4","key":"1372_CR1","doi-asserted-by":"publisher","first-page":"405","DOI":"10.1023\/A:1021291114475","volume":"6","author":"I Aavatsmark","year":"2002","unstructured":"Aavatsmark, I.: An introduction to multipoint flux approximation for quadrilateral grids. 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