Document Type : Special Issue Manuscripts
Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, P. R. China
In carbon capture and storage system, the captured COR2 from energy production processes is compressed to high pressures, transported to a storage site, and then injected into a suitable geologic formation. The leakages from high pressure transportation pipelines would pose hazard to the environment and people. In this paper, a laboratory scale rig for simulating COR2 pipeline leakage is built, and a two-dimensional model is further developed to study the complex behavior of the jet and dispersion of COR2 from the rig at continuous leakage flowrate. In view of the phase-change heat transfer of COR2, a multiphase flow model is used to simulate the jet and dispersion of COR2 gas-liquid two-phase flow. The Euler/Lagrange model and particle stochastic trajectory model are applied to describing the development process of the jet and dispersion of COR2. The computational fluid dynamics software Fluent is employed to calculate the flow field. To prove the validity of the numerical models, an infrared thermography is used to record the temperature field near the leakage orifice during experiments.