Abstract
In some previous papers [1], [2] we considered the Prandtl plane jet problem for a gas expanding from a nozzle into the stationary atmosphere [3] and derived, within the framework of linear aerodynamics, some formulae the length L, the maximum cross-section diameter Dmax and the mean diameter Dm of the first wave of the jet. It was supposed that the pressure pj at the nozzle outlet was greater than the atmospheric pressure pa, (pj > pa). The same formulae are still valid in the linear theory even if pj < pa but in this case instead of a maximum cross-section diameter we have to consider a minimum diameter Dmin since this wave presents now a contraction.
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References
Jacob, C. Sur l’expansion d’un jet supersonique dans l’atmosphère C.R. Acad. Sci. Paris, 280 (1975), A. 153–156
Jacob, C. Sur l’expansion d’un jet supersonique plan dans l’atmosphère Annali di Matematica pura ed applicata, (IV), vol. CVIII (1976)
Prandtl, L. Über die stationären Wellen in einem Gasstrahle Phys. Zeitschrift 5 (1904), 599–601
Oudart, A. L’étude des jets et la mécanique théorique des fluides. Publ. scient. et techn. du Ministére de l’Air, 234 (1949), Paris
Jacob, C. On some Extensions of the Prandtl Formula for the Wave Length of a Sonic Jet Expanding into the Atmosphere Symposium Transsonicum II, Göttingen, Sept. 8–13, 1975; Springer Verlag Berlin (1976) 217–226
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Jacob, C. (1979). Range of Validity of the Formulae Derived by Linear Aerodynamic Theory for the Prandtl Supersonic Jet Problem. In: Müller, U., Roesner, K.G., Schmidt, B. (eds) Recent Developments in Theoretical and Experimental Fluid Mechanics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-67220-0_13
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DOI: https://doi.org/10.1007/978-3-642-67220-0_13
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