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Abstract <p>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.</p>

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Control of Flow Structure of Supersonic Underexpanded Jet of Rarified Gas

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • V. N. Yarygin,
  • V. G. Prikhodko,
  • I. V. Yarygin

摘要

Abstract

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.