The background oriented shlieren (BOS) method is actively used for visualization of flows that occur in a gas environment. Along with it, the capabilities of the method can be used to visualize disturbances in an opaque continuous medium. In this case, in addition to traditional high-speed video shooting, a "background screen" is used in the form of an initial nonuniform randomly distributed picture of the surface grains of the medium being studied. When perturbations are propagated in this area, they are visualized using cross-correlation analysis. It is of interest to determine the sensitivity of the method in the application of important tasks of sensing media by buried blasts. An additional advantage of using the BOS method is its visual verification of the numerical solutions used. The paper considers an experimental and calculated study of HE blast in a dry sandy ground with a density of p ≈ 1.5 g/cm 3. During the experiment, optical-physical registration of the process of perturbation development on the ground surface was used. Using a crosscorrelation image processing algorithm, the diameters of the perturbation zone and the height of the dome were determined. The results of numerical simulation are also presented. Comparison of calculated and experimental data on the height of the sandy ground discharge showed their satisfactory correspondence, which indicates the adequacy of the applied mathematical model.
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