Auflistung nach Mitwirkenden "Prajapati, Nishant"
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Brittle anisotropic fracture propagation in quartz sandstone: insights from phase-field simulations
Prajapati, Nishant; Herrmann, Christoph; Späth, Michael; Schneider, Daniel; Selzer, Michael; Nestler, Britta (Computational Geosciences, 2020-04-19)We developed a generalized multiphase-field modeling framework for addressing the problem of brittle fracture propagation in quartz sandstones at microscopic length scale. Within this numerical approach, the grain boundaries ... -
Multiphase-field modelling of crack propagation in geological materials and porous media with Drucker-Prager plasticity
Späth, Michael; Herrmann, Christoph; Prajapati, Nishant; Schneider, Daniel; Schwab, Felix; Selzer, Michael; Nestler, Britta (Computational Geosciences, 2020-10-22)A multiphase-field approach for elasto-plastic and anisotropic brittle crack propagation in geological systems consisting of different regions of brittle and ductile materials is presented and employed to computationally ... -
Quartz Cementation in Polycrystalline Sandstone: Insights From Phase-Field Simulations
Prajapati, Nishant; Abad Gonzalez, Andres; Selzer, Michael; Nestler, Britta; Busch, Benjamin; Hilgers, Christoph (Journal of Geophysical Research: Solid Earth, 2020)Present work investigates the dynamics of polycrystalline quartz cement growth in sandstone using a multiphase-field model. First, the model parameters corresponding to common reservoir temperature and pressure conditions ...