Three-dimensional tomography in gas flow diagnostics in the presence of an opaque body

The possibility of tomographic reconstruction of the density distribution in a three-dimensional gas flow with a complex structure is considered. The effect of the presence of an opaque body on the reconstruction results is studied. Specific features of the inverse problem that are associated with practical realization of the experiment, namely, a small number of viewing angles and the presence of noise in projection data, are taken into account in numerical simulation.