Temperature and/or density measurements of asymmetrical flow fields by means of the moire-schileren method. (2nd report. Temperature measurements of a combustion flame from a rectangular burner).

Abstract

In order to demonstrate the validity and applicability of the moire-schileren method for asymmetrical flow fields, temperature distributions have been measured in a diffusive combustion flame with a rectangular nozzle. Experimental moire images of the flame, which show integral light deflection, were recorded by a video camera, and were inverted to an internal temperature distribution by the numerical inverting method based upon the modified Maldonado-Olsen series representation. The results show that the temperature profiles in the flame have a complex feature caused by a rectangular nozzle and the resent inversion method is very effective.