Local and global existence of pathwise solution for the stochastic Boussinesq equations with multiplicative noises

2020 ◽  
Vol 130 (3) ◽  
pp. 1545-1567
Author(s):  
Lihuai Du ◽  
Ting Zhang
Keyword(s):  
Global Existence ◽  
Boussinesq Equations ◽  
Multiplicative Noises ◽  
Pathwise Solution

scholarly journals The Well Posedness for Nonhomogeneous Boussinesq Equations

Symmetry ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 2110
Author(s):  
Yan Liu ◽  
Baiping Ouyang
Keyword(s):  
Cauchy Problem ◽  
Global Existence ◽  
Positive Constant ◽  
Besov Spaces ◽  
Initial Velocity ◽  
Initial Temperature ◽  
Boussinesq Equations ◽  
Well Posedness ◽  
The Cauchy Problem ◽  
Critical Besov Spaces

This paper is devoted to studying the Cauchy problem for non-homogeneous Boussinesq equations. We built the results on the critical Besov spaces (θ,u)∈LT∞(B˙p,1N/p)×LT∞(B˙p,1N/p−1)⋂LT1(B˙p,1N/p+1) with 1<p<2N. We proved the global existence of the solution when the initial velocity is small with respect to the viscosity, as well as the initial temperature approaches a positive constant. Furthermore, we proved the uniqueness for 1<p≤N. Our results can been seen as a version of symmetry in Besov space for the Boussinesq equations.

Local existence and blow-up criterion for the Boussinesq equations

1997 ◽  
Vol 127 (5) ◽  
pp. 935-946 ◽  
Author(s):  
Dongho Chae ◽  
Hee-Seok Nam
Keyword(s):  
Global Existence ◽  
External Force ◽  
Existence And Uniqueness ◽  
Blow Up ◽  
Local Existence ◽  
Boussinesq Equations ◽  
Passive Scalar ◽  
Smooth Solutions ◽  
Local Existence And Uniqueness ◽  
Blow Up Criterion

SynopsisIn this paper, we prove local existence and uniqueness of smooth solutions of the Boussinesq equations. We also obtain a blow-up criterion for these smooth solutions. This shows that the maximum norm of the gradient of the passive scalar controls the breakdown of smooth solutions of the Boussinesq equations. As an application of this criterion, we prove global existence of smooth solutions in the case of zero external force.

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