A temperature jump in the water traveling through a pipe is delayed by the absorption of heat into the pipe wall. The convective transport of heat by the water and the conductive exchange with the interior pipe wall are described by a singular micromodel. The limiting form is a distributed microstructure model, which is successively better approximated by simpler firstand second-order kinetic m...

Two-dimensional (2D) pore-scale models have successfully simulated microfluidic experiments of aqueous-phase flow with mixing-controlled reactions in devices with small aperture. A standard 2D model is not generally appropriate when the presence of mineral precipitate or biomass creates complex and irregular three-dimensional (3D) pore geometries. We modify the 2D lattice Boltzmann method (LBM)...

This paper investigates how broadband penetration affects economic growth. A macroeconomic production function with a micromodel for broadband investment is used to estimate the impact of broadband infrastructure and growth. The results indicate a significant causal positive link especially when a critical mass of infrastructure is present. The scope of this research is the 15 European Union co...

Etched silicon microfluidic pore network models (micromodels) with controlled chemical and redox gradients, mineralogy, and microbiology under continuous flow conditions are used for the incremental development of complex microenvironments that simulate subsurface conditions. We demonstrate the colonization of micromodel pore spaces by an anaerobic Fe(III)-reducing bacterial species (Geobacter ...

Abstract Diminishing hydrocarbon reserves in oil reservoirs and the need to sustain continuous production have prompted researchers further investigate Enhanced Oil Recovery (EOR) techniques. Researchers also test run these processes before EOR fluid injection into reservoir maximise whilst minimising damage loss. This study aims simulate displacement during of two different types fluid, namely...

In this paper we develop a finite deformation micromechanical framework for modeling rate-dependent failure in unidirectional composites under off-axis loading. The model performance is compared with original experiments on thermoplastic carbon/PEEK tested at different strain-rates and angles. To achieve quantitative agreement the experiments, microcrack initiation criterion based local stress ...

In this paper, a micromechanical framework for modeling the rate-dependent response of unidirectional composites subjected to off-axis loading is introduced. The model intended thin slice representative volume element that oriented perpendicular reinforcement composite material. testing conditions from uniaxial test are achieved by dedicated strain-rate based arclength formulation. constraint e...