Abstract
The propagation of shock waves in non-homogeneous gases is illustrated with a series of model shock tube experiments in which weak shock waves interact with oblique, cylindrical and spherical density interfaces. Shock refraction, diffraction and focusing are observed as well as interface deformation and vortex development due to the baroclinic effect. Recent numerical and experimental work in this domain is reviewed. The scattering of weak shocks by a random array of spherical inhomogeneities (2 mm diameter helium-filled soap bubbles) is also explored experimentally, and interpreted using a theory of turbulent shock thickening, developped for sonic boom scattering. Two-dimensional simulations of shocks propagating in a regular array of helium cylinders are presented in order to illustrate the wave process.
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Haas, JF. (1995). Experiments and Simulations on Shock Waves in Non-Homogeneous Gases. In: Brun, R., Dumitrescu, L.Z. (eds) Shock Waves @ Marseille IV. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-79532-9_4
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DOI: https://doi.org/10.1007/978-3-642-79532-9_4
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