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<p>We consider the Navier–Stokes–Fourier system with general inhomogeneous Dirichlet–Neumann boundary conditions. We propose a new approach to the local well–posedness problem based on conditional regularity estimates. By conditional regularity we mean that any strong solution belonging to a suitable class remains regular as long as its amplitude remains bounded. The result holds for general Dirichlet–Neumann boundary conditions provided the material derivative of the velocity field vanishes on the boundary of the physical domain. As a corollary of this result we obtain:<UnorderedList Mark="Bullet"> <ItemContent> <p>Blow up criteria for strong solutions</p> </ItemContent> <ItemContent> <p>Local existence of strong solutions in the optimal <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(L^p-L^q\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msup> <mi>L</mi> <mi>p</mi> </msup> <mo>-</mo> <msup> <mi>L</mi> <mi>q</mi> </msup> </mrow> </math></EquationSource> </InlineEquation> framework</p> </ItemContent> <ItemContent> <p>Alternative proof of the existing results on local well posedness</p> </ItemContent> </UnorderedList></p>

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Local existence and conditional regularity for the Navier–Stokes–Fourier system driven by inhomogeneous boundary conditions

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年6月17日

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  • Anna Abbatiello,
  • Danica Basarić,
  • Nilasis Chaudhuri,
  • Eduard Feireisl

摘要

We consider the Navier–Stokes–Fourier system with general inhomogeneous Dirichlet–Neumann boundary conditions. We propose a new approach to the local well–posedness problem based on conditional regularity estimates. By conditional regularity we mean that any strong solution belonging to a suitable class remains regular as long as its amplitude remains bounded. The result holds for general Dirichlet–Neumann boundary conditions provided the material derivative of the velocity field vanishes on the boundary of the physical domain. As a corollary of this result we obtain:

Blow up criteria for strong solutions

Local existence of strong solutions in the optimal \(L^p-L^q\) L p - L q framework

Alternative proof of the existing results on local well posedness