Gareth Block
Lawrence Livermore National Laboratory
23 Papers
139 Citations
Gareth Block is an academic researcher from Lawrence Livermore National Laboratory. The author has contributed to research in topics: Electrokinetic phenomena & Biot number. The author has an hindex of 8, co-authored 23 publications. Previous affiliations of Gareth Block include Business International Corporation & ExxonMobil.
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Papers
Simulations of fracture and fragmentation of geologic materials using combined FEM/DEM analysis
TL;DR: In this article, the effect of explosive and impact loading on geological media using the Livermore distinct element code (LDEC) was investigated, and it is confirmed that persistent joints lead to an underestimation of the impact energy needed to fill the tunnel systems with rubble.
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Measurement models for ultrasonic nondestructive evaluation
TL;DR: In this article, the electromechanical reciprocity relation is used to construct theoretical models of measurement processes in ultrasonic non-destructive evaluation, which can be used to form integral equations or to generate asymptotic approximations to the particle displacements and stresses in the film.
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Simulations of dynamic crack propagation in brittle materials using nodal cohesive forces and continuum damage mechanics in the distinct element code LDEC
TL;DR: In this paper, two approaches to modeling these phenomena are described and used in numerical simulations, one based on cohesive elements that utilize a rate-dependent weakening law for the nodal cohesive forces and the other based on a continuum damage model which has a weakening effect that lowers the effective Rayleigh wave speed in the material surrounding the crack tip.
Patent
Quantifying a reservoir volume and pump pressure limit
Ahmed S. Abou-Sayed,Mehdi Loloi,Omar Abou-Sayed,Gareth Block,Ali Zidane +4 more
- 05 Aug 2014
TL;DR: In this paper, the authors provide computer modeling of a pressure transient behavior after shut-in and during fall-off of an injection event, providing estimates of stimulated reservoir volume, formation permeability, stress contrast across the target and adjacent zones, fracture dimensions, fracture beyond the target zone, and pump pressure limits for maintaining fractures within the target region.
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