The paper presents experimental investigation results of turbulent vortices scales in diffusion flames. Comparison of obtained data on the basis of digital tracer visualization and thermography was carried out. A good correlation is obtained between the sizes of large vortex structures in the velocity field, recorded using the PIV method, and the size of temperature inhomogeneities, recorded by flame thermography.
The effect of superheated water vapor on the flame characteristics was experimentally studied by IR thermography in a wide range of operating parameters using a spray burner and diesel fuel. A FLIR thermal imaging camera (JADE J530SB) was used for measurements. The instantaneous and average temperature fields were obtained and time-averaged temperature profiles were constructed along the symmetry axis of flame. The maximum flame temperature as a function of steam consumption at constant fuel consumption was found: with increasing steam consumption, a decrease in temperature is observed, which can positively affect the concentration of hazardous substances in exhaust gases. It was also found that with an increase in fuel consumption at constant steam consumption, the maximum flame temperature shifts from the base of the flame, and the high-temperature flame zone increases. The obtained data can be used for numerical simulation of combustion.
The paper represents the experimental study of the dimensions of turbulent vortices in diffusion flames. The data obtained by the particle image velocimetry method are compared to the data obtained by the thermography method.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.