Abstract
Due to the recent progresses in sensor and laser technologies, volumetric tomography has become a popular diagnostic for combustion studies. Background-oriented Schlieren tomography (BOST) is one promising modality of volumetric tomography due to its ease of implementation and versatility in imaging multiple scalars. It has been demonstrated for both instantaneous and time-resolved measurements of flames with multiple cameras. This work reports a time-resolved BOST system with only one single high-speed camera by employing a customized fiber bundle which is flexible, compact and portable. A proof-of-concept experiment was conducted by imaging the three-dimensional refractive index field of a premixed turbulent flame.
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