Instantaneous Plif Measurement of Species Mole-fraction in a Varying Temperature Supersonic Flow
نویسندگان
چکیده
A theoretical model for instantaneous PLIF measurements of mole fraction in a shock tunnel ow with pressure gradients and large temperature variations is presented. The model determined the optimum excitation frequency which provided PLIF signal intensity proportional to freestream mole fraction. Experimental PLIF images of a two-dimensional slot scramjet injector with and without hydrogen fuel injection were obtained. Using the theoretical modelling, the injection image was corrected so that intensity directly corresponded to the freestream mixture fraction.
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