摘要

This paper is concerned with well-posedness of the natural convection in a viscous incompressible fluid. We first prove that the n-dimensional Boussinesq system is well-posed for initial data ((u) over right arrow (0), theta(0)) either belonging to (B-infinity,1(-1) boolean AND B-infinity,infinity(-1,1)) x B-p,r(-1) or to B-infinity,infinity(-1,1) x B-p,infinity(-1,epsilon) with 1 <= r <= infinity, n/2 < p < infinity, epsilon > 0 and then we prove that this system is well-posed for initial data belonging to (B-infinity,1(-1) boolean AND B-infinity,infinity(-1,1)) x (B-n/2-1(-1) boolean AND B-n/2,infinity(-1,1)). well-posedness; B-p,r(s,alpha) (L) over tilde (rho)(T)(B-p,r(s,alpha)).