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Recent Submissions
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Numerical modelling of two-phase flow in fractured rock masses using zero-thickness interface elements
(International Centre for Numerical Methods in Engineering (CIMNE), 2021)
Conference report
Open AccessIn recent years, the authors and co-workers have developed a 3D finite element model for coupled thermo-hydro-mechanical (THM) problems in fractured rock masses. Zero-thickness interface elements are used for taking into ... -
Iterative strategies based on constitutive dissipation
(International Centre for Numerical Methods in Engineering (CIMNE), 2021)
Conference report
Open AccessFE formulation of solid mechanics problems typically require iterative strategies to solve the resulting nonlinear system. Basic strategies with prescribed load values, such as the Newton-Raphson method, are not valid in ... -
New results in 3D-mesomechanical coupled analysis of external sulphate attack in concrete
(International Centre for Numerical Methods in Engineering (CIMNE), 2021)
Conference report
Open AccessExternal Sulphate Attack (ESA) is one of the main degradation processes affecting concrete structures. It takes place when the concrete is in an environment rich in sulphate ions and with a high humidity index. Once it has ... -
Effect of long-term pore pressure evolution on the integrity of cement plugs of abandoned oil wells in CCS sites
(International Centre for Numerical Methods in Engineering (CIMNE), 2021)
Conference report
Open AccessIn the context of Carbon Capture Storage (CCS) in abandoned hydrocarbon reservoirs, a preliminary study of the effects of pore pressure evolution on the integrity of oil-well cement seals is performed. A 2D cross-section ... -
Transient large heat advection in fractured rock: a zero-thickness interface formulation
(International Centre for Numerical Methods in Engineering (CIMNE), 2021)
Conference report
Open AccessIn a fractured rock mass, the existence of discontinuities may generate preferential paths where the hydraulic flow velocities are frequently much higher than in the porous medium and heat advection tends to dominate over ... -
Improving urban metabolism: bi-directional energy and environmental benefits of rooftop greenhouse and building integration
(International Building Performance Simulation Association (IBPSA), 2019)
Conference report
Open AccessRapid global urbanisation in 21st century results in cities consuming vast resources but also offering unique opportunities for more integrated and circular resource management. This work investigates potential benefits ... -
Zero-thickness interface model with chemical degradation by acid attack
(2019)
Conference report
Open AccessCarbon dioxide (CO2) storage in abandoned oil/gas reservoirs is considered a viable alternative to reduce greenhouse gas emissions to the atmosphere. An important element of the risk associated with long-term CO2 storage ... -
Numerical analysis of desiccation, shrinkage and cracking in low plasticity clayey soils
(2017)
Conference lecture
Open AccessThis paper presents a numerical study of the desiccation processes of low-plasticity clayey soils that usually result in shrinkage and often in cracking. For the theoretical development of the numerical model, concepts of ... -
Further developments in stress initialization in geomechanics via FEM and a two-step procedure involving Airy functions
(2017)
Conference report
Open AccessThe in-situ stress field in rock masses is a key aspect when a numerical analysis of a rock mass is carried out in any area of geo-engineering, such as civil, mining, or Oil & Gas. A method for the numerical generation of ... -
Coupled H-M fracture interaction using FEM with zero-thickness interface elements
(2017)
Conference report
Open AccessMassive treatments of hydraulic fracturing is a procedure employed for low permeability reservoirs stimulation. This technique consists in generating a series of parallel spaced fractures parallel (multi-stage fracturing). ... -
Modelling of heat and moisture transfer in concrete at high temperature
(2017)
Conference report
Open AccessMoisture diffusion and related fluid pressures play a key role in cracking and spalling of concrete subject to high temperatures. This paper describes recent developments of a mode for moisture and heat transfer in porous ... -
Diffusion-reaction modelling of the degradation of oil-well cement exposed to carbonated brine
(2017)
Conference report
Open AccessThe essential aspects of a diffusion-reaction model in development for the degradation process of oil-well cement exposed to carbonated brine are presented in this paper. The formulation consists of two main diffusion/reaction ...
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