The pipeline leakage process of supercritical CO2 involves complex phenomena because of the high inner pressure and the multiphase choked flow near the leakage point. In this work, an experimental facility was developed to investigate the thermodynamic and fluid dynamic behaviour in pressurized...

Three-dimensional numerical simulations are performed to investigate the effects of nitrogen (N2) and sulfur dioxide (SO2) impurities on the solubility trapping mechanism of carbon dioxide (CO2) geological storage. Dissolved CO2 has been suggested to increase the density of the aqueous phase....

Numerical analyses are performed to study the fluid dynamic behaviours of the solubility trapping in the context of CO2 storage in deep geological formations. Dissolution of CO2 into the underlying brine increases the density of brine, leading to a gravitational instability. This instability...

The accidental release is one of the main risks during the pipeline transportation of supercritical CO2 for carbon capture and storage and enhanced oil recovery. The leakage of high pressure CO2 involves complex phenomena, including the expansion and flashing of the CO2 jet, dispersion of a...

Numerical simulations are essential to the understanding of the long-term geological storage of CO2. Physical modelling of geological storage of CO2 has been based on Darcy’s law, together with the equations of conservation of mass and energy. Modelling and simulations can be used to predict...

Effective monitoring and numerical simulations are essential to understanding the implications of long-term geological carbon storage; in particular, the predictions of CO2 plume flow under storage conditions, storage integrity of sites, and the design and operational aspects of the CO2 storage...

We examine the evolution of environmental discourse in conference calls and whether and how this discourse affects firm valuation. We measure the amount of environmental discourse as the frequency count of environmentally-related topics in the transcripts of conference calls. We find that...

By examining managers’ decisions about disclosing updated assessments of firms’ risks, we present evidence that the risk factor disclosures are informative. We use the setting of cybersecurity risk factor disclosures after a data breach because data breaches, especially severe breaches,...