Global solvability of the multidimensional Navier–Stokes equations of a compressible nonlinear viscous fluid. II.

*(English. Russian original)*Zbl 0928.35119
Sib. Math. J. 40, No. 3, 541-555 (1999); translation from Sib. Mat. Zh. 40, No. 3, 635-649 (1999).

The article is a continuation of the author’s study of the multidimensional Navier-Stokes equations. In the first part [see A. E. Mamontov, Sib. Mat. Zh. 40, No. 2, 408-420 (1999)], the author stated the problem, announced results, and established the solvability of the stationary problem which is needed for justifying the Rothe method. The choice of this method relates to the necessity of invoking an analog of original differential equations for establishing boundedness of the derivatives with respect to time and, as a consequence, compactness of approximate solutions.

The aim of the second part is to prove solvability of the evolution problem, in particular, for the limit stress tensor. The author constructs a solution to the evolution problem by the Rothe method with parabolic regularization and mollification of the convection terms.

The aim of the second part is to prove solvability of the evolution problem, in particular, for the limit stress tensor. The author constructs a solution to the evolution problem by the Rothe method with parabolic regularization and mollification of the convection terms.

Reviewer: V.Grebenev (Novosibirsk)

##### MSC:

35Q30 | Navier-Stokes equations |

35D05 | Existence of generalized solutions of PDE (MSC2000) |

35B45 | A priori estimates in context of PDEs |

46E30 | Spaces of measurable functions (\(L^p\)-spaces, Orlicz spaces, Köthe function spaces, Lorentz spaces, rearrangement invariant spaces, ideal spaces, etc.) |

35A35 | Theoretical approximation in context of PDEs |

##### Keywords:

multidimensional Navier-Stokes equation; compressible fluid with nonlinear viscosity; weak solution; global solvability
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\textit{A. E. Mamontov}, Sib. Math. J. 40, No. 3, 635--649 (1999; Zbl 0928.35119); translation from Sib. Mat. Zh. 40, No. 3, 635--649 (1999)

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##### References:

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[5] | A. E. Mamontov, Orlicz Spaces in the Existence problem of Global Solutions to Viscous Compressible Nonlinear Fluid Equations [Preprint, No. 2-96], Inst. Gidrodinamiki (Novosibirsk), Novosibirsk (1996). |

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