Experimental study shows how homogeneous condensation affects jet structure in a monatomic gas, suggesting important implications for gas dynamics.
The paper presents the results of an experimental study on the effect of homogeneous condensation on the density and shock-wave structure of an underexpanded jet of a monatomic gas flowing into a vacuum from a supersonic nozzle. It is shown that this effect can be decisive, leading to a decrease in the relative density in the region of free supersonic expansion in the jet core, as well as transition of the shock-wave structure of the initial section of the jet from an X-shaped central shock to a Mach disc flow.
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Yarygin et al. (2025) studied this question.
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