Numerical Investigation on the Fixed-Stress Splitting Scheme for Biot’s Equations: Optimality of the Tuning Parameter

  • Jakub W. BothEmail author
  • Uwe Köcher
Conference paper
Part of the Lecture Notes in Computational Science and Engineering book series (LNCSE, volume 126)


We study the numerical solution of the quasi-static linear Biot equations solved iteratively by the fixed-stress splitting scheme. In each iteration the mechanical and flow problems are decoupled, where the flow problem is solved by keeping an artificial mean stress fixed. This introduces a numerical tuning parameter which can be optimized. We investigate numerically the optimality of the parameter and compare our results with physically and mathematically motivated values from the literature, which commonly only depend on mechanical material parameters. We demonstrate, that the optimal value of the tuning parameter is also affected by the boundary conditions and material parameters associated to the fluid flow problem suggesting the need for the integration of those in further mathematical analyses optimizing the tuning parameter.



The research contribution of the second author was partially supported by E.ON Stipendienfonds (Germany) under the grant T0087 29890 17 while visiting University of Bergen.


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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.University of BergenBergenNorway
  2. 2.Helmut-Schmidt-UniversityUniversity of the Federal Armed Forces HamburgHamburgGermany

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