  In this paper, we consider dynamics defined by the Navier-Stokes equations in
the Oberbeck-Boussinesq approximation in a two dimensional domain. This model
of fluid dynamics involve fundamental physical effects: convection, and
diffusion. The main result is as follows: local semiflows, induced by this
problem, can generate all possible structurally stable dynamics defined by
$C^1$ smooth vector fields on compact smooth manifolds (up to an orbital
topological equivalency). To generate a prescribed dynamics, it is sufficient
to adjust some parameters in the equations, namely, the viscosity coefficient,
an external heat source, some parameters in boundary conditions and the small
perturbation of the gravitational force.
