Modeling and Validation of a Large Scale, Multiphase Carbon Capture System

TitleModeling and Validation of a Large Scale, Multiphase Carbon Capture System
Publication TypeConference Proceedings
Year of Conference2013
AuthorsLane WA, Storlie CB, Montgomery CJ, Ryan EM
Conference NameASME 2013 Fluids Engineering Division Summer Meeting (FEDSM2013)
ISBN Number978-0-7918-5558-4
Keywordscarbon capture, CFD, Fluidized beds, Hydrodynamics, Tube bundle, Uncertainty Quantification

As the effects of climate change continue to rise with increasing carbon dioxide emission rates, it is imperative that we develop an efficient method for carbon capture. This paper outlines the framework used to break down a large, complex carbon capture system into smaller unit problems for model validation, and uncertainty quantification. We use this framework to investigate the uncertainty and sensitivity of the hydrodynamics of a bubbling fluidized bed. Using the open-source computational fluid dynamics code MFIX we simulate a bubbling fluidized bed with an immersed horizontal tube bank. Mesh resolution and statistical steady state studies are conducted to identify optimal operating conditions. The preliminary results show good agreement with experimental data from literature. Employing statistical sampling and analysis techniques were designed a set of simulations to quantify the sensitivity of the model to model parameters that are difficult to measure, including, coefficients of restitution, friction angles, packed bed void fraction, and drag models. Initial sensitivity analysis results indicate that no parameters may be omitted. Further uncertainty quantification analysis is underway to investigate and quantify the effects of model parameters on the simulation results.