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M. Wrobel

Publications and source records attributed to M. Wrobel.

2 recordsLinked to original sources
arXiv2019

Redirection of a crack driven by viscous fluid taking into account plastic effects in the process zone

In this paper the problem of redirection of a crack driven by viscous fluid under mixed mode loading is considered. The loading includes the classical Modes I - III and the hydraulically induced tangential traction on the fracture walls. The effect of the plastic deformation of the near tip zone is accounted for. Different criteria to determine the fracture deflection angle are examined and compared.

physics.app-ph↗
arXiv2012

Remarks on application of different variables for the PKN model of hydrofracturing. Various fluid-flow regimes

The problem of hydraulic fracture for the PKN model is considered within the framework presented recently by Linkov (2011). The modified formulation is further enhanced by employing an improved regularized boundary condition near the crack tip. This increases solution accuracy especially for singular leak-off regimes. A new dependent variable having clear physical sense is introduced. A comprehensive analysis of numerical algorithms based on various dependent variables is provided. Comparison with know numerical results has been given.

physics.geo-ph↗