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Real-gas effects in very weak shock waves in the atmosphere and the structure of sonic bangs

  • J. P. Hodgson (a1) and N. H. Johannesen (a1)


An approximate expression is given for the thickness of weak fully dispersed shock waves. Using available data on the thermodynamic properties of air, it is shown that shocks of the strength expected in sonic bangs are fully dispersed. Estimated relaxation times for dry and humid air lead to wide variations in possible thickness, varying from millimetres to metres.



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