We study the Cauchy problem of the nonhomogeneous Benard system in the whole two-dimensional (2D) space, where the density is allowed to vanish initially. We prove that there exists a unique local strong solution. To compensate for the lack of integrability of the velocity in the whole space, a careful space weight is imposed on the initial density, which cannot decay too slowly in the far field.
机构:
Chinese Acad Sci, Inst Appl Math, Acad Math & Syst Sci, Beijing 100190, Peoples R China
Univ Chinese Acad Sci, Beijing 100049, Peoples R ChinaChinese Acad Sci, Inst Appl Math, Acad Math & Syst Sci, Beijing 100190, Peoples R China
Song, Sisi
ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND PHYSIK,
2018,
69
(02):
机构:
Capital Normal Univ, Sch Math Sci, Beijing 100048, Peoples R ChinaCapital Normal Univ, Sch Math Sci, Beijing 100048, Peoples R China
Jiu, Quansen
Wang, Fengchao
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机构:
Beijing Normal Univ Zhuhai, Adv Inst Nat Sci, Zhuhai 519087, Peoples R China
Beijing Normal Univ, Sch Math Sci, Beijing 100875, Peoples R China
Beijing Normal Univ, Key Lab Math & Complex Syst, Minist Educ, Beijing 100875, Peoples R ChinaCapital Normal Univ, Sch Math Sci, Beijing 100048, Peoples R China