We investigated a simultaneous temporally and spatially resolved 2-D velocity field above a burning circular pan of alcohol using particle image velocimetry (PIV). The results obtained from PIV were used to assess a thermal particle image velocimetry (TPIV) algorithm previously developed to approximate the velocity field using the temperature field, simultaneously captured by an infrared (IR) thermal camera. By tracing “thermal particles,” which were assumed to be virtual particles that corresponded to pixels of temperature values in successive IR images, the TPIV algorithm estimated a larger scale instantaneous velocity field than either a single-point velocity measurement (e.g., LDV) or the area velocity measurement such as PIV. Instantaneous velocity fields obtained from both methods are presented. Time series vertical velocity profiles and time-averaged velocity vector fields are compared. The comparison demonstrates the applicability and performance of the TPIV algorithm in wildfire research.
International Association of Fire and Safety Science (IAFSS)/8th International Symposium on Fire Safety Science
Required Publisher’s Statement
Sun, L., Zhou, X., Mahalingam, S., and Weise, D.R. “Experimental Investigation of the Velocity Field in Buoyant Diffusion Flames Using PIV and TPIV Algorithm,” 8thInternational Symposium on Fire Safety Science, Beijing, China, September 18-23, 2005.
Scholarly Commons Citation
Sun, L., Zhou, X., Mahalingam, S., & Weise, D. R. (2006). Experimental Investigation of the Velocity Field in Buoyant Diffusion Flames Using PIV and TPIV Algorithm. , (). Retrieved from http://commons.erau.edu/publication/327