3D Flow Visualization via Background Oriented Schlieren Tomography

Background oriented schlieren tomography (BOST) is an effective reconstruction technique of unsteady 3D refractive index field. In this paper, the equivalent optical system model of lens is used to replace the pinhole model and simulate the imaging process of background oriented schlieren accurately. Based on the optical flow equation reconstruction model, the reconstruction process of turbulent flame are simulated. The effects of different reconstruction methods on the reconstruction results are discussed. Finally, the feasibility of the reconstruction method is verified by experiments.