Publications Details

Towards Structured PLIF Excitation for Probing Harsh Environments

Hargis, Joshua W.; Swain, William E.; Guildenbecher, Daniel R.; Kearney, S.P.; Richardson, Daniel R.

Planar laser induced fluorescence is a common diagnostic technique employed in the probing of flames and other combustion phenomena. In this work, structured illumination is coupled to the application of OH PLIF in a Hencken burner to demonstrate its utility for single-camera, single snapshot background subtraction. This variant of structured PLIF illumination is being developed for eventual application to transient environments where background radiation cannot be quantified from ensemble averaging. The extension of the structured illumination signal (in the recorded PLIF image) to multiple spatial frequencies is also demonstrated with potential utility for multi-wavelength PLIF thermometry.