Abstract
This paper concerns the Cauchy problem of three-dimensional viscous, compressible, and heat-conducting magnetohydrodynamic flows. Both some new \(L^p\) gradient estimates and the “div-curl” decomposition of \(\Vert \nabla \text{ u }\Vert _{L^3}\) are established; the existence of global solutions to the Cauchy problem with small energy and lower regularity assumed on the initial data are obtained. Furthermore, we also prove that the global solution belongs to a new class of functions in which the uniqueness can be shown to hold.
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The author would like to thank the anonymous referee for his/her helpful comments, which improve the presentation of the paper.
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This research is supported in part by the Natural Science Foundation of Shandong Province of China (Grant No. ZR2021QA049)
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This research is supported in part by the Natural Science Foundation of Shandong Province of China (Grant No. ZR2021QA049)
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Zhang, M. On global solutions to the 3D viscous, compressible, and heat-conducting magnetohydrodynamic flows. Z. Angew. Math. Phys. 73, 193 (2022). https://doi.org/10.1007/s00033-022-01833-6
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DOI: https://doi.org/10.1007/s00033-022-01833-6
Keywords
- Compressible magnetohydrodynamic equations
- Full compressible Navier–Stokes system
- Strong solutions
- Global existence
- Uniqueness