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Free boundary problem for the equations of spherically symmetric motion of compressible gas with density-dependent viscosity

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    0330020 - MÚ 2010 RIV CH eng J - Journal Article
    Ducomet, B. - Nečasová, Šárka
    Free boundary problem for the equations of spherically symmetric motion of compressible gas with density-dependent viscosity.
    [Problém s volnou hranicí pro rovnice symetrického proudění stlačitelného plynu s vizkozitou závislou na hustotě.]
    Journal of Evolution Equations. Roč. 9, č. 3 (2009), s. 469-490. ISSN 1424-3199. E-ISSN 1424-3202
    R&D Projects: GA ČR GA201/08/0012
    Institutional research plan: CEZ:AV0Z10190503
    Keywords : compressible heat conduction fluids * spherically symmetry * density-dependent viscosity
    Subject RIV: BA - General Mathematics
    Impact factor: 0.918, year: 2009

    We consider a free boundary problem for the equations of spherically symmetric motion of a isentropic gas with a density-dependent viscosity mu(eta) >= (mu) under bar eta(-lambda), where (mu) under bar and lambda are positive constants. We prove tthe existence of weak solution for 0 < lambda < 1/4.

    Uvažujeme problém s volnou hranicí pro případ rovnic sféricky symetrického proudění isentropického plynu s viskozitou závislou na hustote mu(eta) >= (mu) under bar eta(-lambda), kde (mu) under bar a lambda jsou kladné konstanty. Dokázali jsme existenci slabého řešení pro případ 0 < lambda < 1/4.
    Permanent Link: http://hdl.handle.net/11104/0175895

     
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