WarmingUp Magazine

A coupled permeability thresholding with effective medium theoryupscaling technique for highly heterogeneous reservoirs

Reservoir simulations are performed with fine grid geological models as primary input into the reservoir simulators. These fine grid geological models contain ten million to one hundred million cells while current serial reservoir simulators can only handle one hundred thousand to one million cells. This disparity in scales prohibits direct...

Sustainable performance challenges of rural microgrids: Analysis of incentives and policy framework in Indonesia

Rural off-grid electrification systems powered by renewable energy have become popular in the Global South. Unfortunately, many microgrids have experienced trouble during their first years of operation, leading to premature system deterioration. In this paper we trace these problems to institutional issues associated with goal displacement in...

Uncertainty propagation of arbitrary probability density functions applied to upscaling of transmissivities

In many fields of study, and certainly in hydrogeology, uncertainty propagation is a recurring subject. Usually, parametrized probability density functions (PDFs) are used to represent data uncertainty, which limits their use to particular distributions. Often, this problem is solved by Monte Carlo simulation, with the disadvantage that one...

An upscaling workflow for recovery evaluation in heavy oil reservoirs

The displacement of heavy oil by water flooding is characterized by instable features known as viscous fingers. These fingers may form at very small scales, as can be observed in laboratory experiments and predicted from instability theory. Explicit representation of such features in large-scale reservoir models is practically impossible because...

Hollow fiber membrane contactors for CO2 capture: Modeling and up-scaling to CO2 capture for an 800 MWe coal power station

A techno-economic analysis was completed to compare the use of Hollow Fiber Membrane Modules (HFMM) with the more conventional structured packing columns as the absorber in amine-based CO2capture systems for power plants. In order to simulate the operation of industrial scale HFMMsystems, a two-dimensional model was developed and validated based...

Low-Cost upscaling compatibility of five different ITO-Free architectures for polymer solar cells

Upscaling energy related innovations

Nested-scale discharge and groundwater level monitoring to improve predictions of flow route discharges and nitrate loads

Identifying effective measures to reduce nutrient loads of headwaters in lowland catchments requires a thorough understanding of flow routes of water and nutrients. In this paper we assess the value of nested-scale discharge and groundwater level measurements for predictions of catchment-scale discharge and nitrate loads. In order to relate...

A velocity-based approach to visco-elastic flow of rock

In structural geology, viscous creep is generally recognized as the major deformation mechanism in the folding of rock layers through geological time scales of hundreds of thousands of years. Moreover, since deformation of rock salt by creep takes already place on relatively small time scales - weeks to months, say - creep is a relevant...