Device Scale Modeling (DSM) at NETL is helping to overcome technical barriers associated with developing next-generation fossil energy technologies and processes. This research facility uses state-of-the-art, high-speed computing resources to verify computational fluid dynamics (CFD) models used to study coal gasifiers, gas turbine combustors, solid oxide fuel cell (SOFC) systems, and liquefied natural gas plumes, as well as mercury capture technologies.

DSM research is helping to move advanced visualization and high-performance computing models from researchers' computer screens to actual laboratory experiments and pilot testing. The DSM group develops models that can be integrated into a wide range of simulation technology, including Advanced Process Engineering Co-Simulator (APECS) and Multiphase Flow with Interphase eXchanges (MFIX). These simulators are enabling researchers to model and understand the behavior of individual components within advanced power generation systems.

For example, DSM supports performance testing of SOFC systems. Fuel cell technology holds promise for more efficient and environmentally benign power sources for many industries; however, problems must be overcome in selecting materials that are resistant to the high operating temperatures within SOFCs. The DSM group has developed a detailed CFD model to provide information on heat transfer, mass transfer, fluid flow, and electrochemical processes taking place within the SOFC unit. This model will improve thermal management and engineering design, and make it possible to more accurately access cell operation.

DSM also enables researchers to view a virtual simulation of the components operating within power plants, reducing the time, cost, and risk of implementing engineering advances. For example, the transport gasifier is one of several promising options for new power plants, because of its high throughput and reduced operating temperature compared with current gasifiers. To help engineers and researchers fully exploit this new gasification technology, the DSM group is developing a high-fidelity model that will provide an efficient way to investigate the effect of one component – the transport gasifier – on overall plant performance and efficiency. This model is applicable to the Power Systems Development Facility (PSDF) now operating in Wilsonville, Alabama , as well as to FutureGen, a prototype plant for testing new clean power, carbon capture, and coal-to-hydrogen technologies.

MFIX simulation of the PSDF transport gasifier.
DSM researchers use MFIX to model gasifier fluid dynamics.

For more information contact: Chris Guenther