Submitting Campus

Daytona Beach


Engineering Fundamentals

Document Type

Conference Proceeding

Publication/Presentation Date



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.


Beijing, China

Additional Information

Dr. Sun was not affiliated with Embry-Riddle Aeronautical University at the time this paper was published.

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.