Abstract
Finite-element computations and measurements of a strongly swirling flow with pulverized coal combustion are presented. The turbulent flow expands into a low confined combustion chamber which represents the geometry of typical industrial furnaces. Detailed in-flame measurements of velocity, temperature, and gas concentrations were made by suction probes at several cross sections. These data are used for the detailed evaluation of higher-order turbulence models in connection with coal combustion. In modeling the particle-gas flow, the momentum equations are solved by considering the particle phase as a continuum and neglecting the mean slip velocities between the two phases. Trajectories of the individual particles treated as inert matter are subsequently computed employing a Lagrangian method after a convergent flow field solution is obtained. The external forces which influence the particles' motion are considered and compared. Additionally, in a more realistic approach, the mass loss of the coal particles due to devolatilization and char-burnout is taken into account. The influence of the gas-phase turbulence modeling on the particle motion is also investigated.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
