Ondas de gravedad internas en fluidos viscosos y termoconductivos

Internal gravity waves are waves that generate and propagate inside a fluid that is stable stratified. Waves are, in general, a very efficient way of energy transport other than mean fluid flow. Energy balance at several scales must take into account the contribution of internal gravity waves. In this work, classical theory of internal gravity waves is extended to a model that takes into account for the viscosity and thermal conductivity of fluids, properties that are shown to be the key to understand several observed new phenomena in atmosphere-like and ocean-like fluids as well. The model discussed is achieved under several approximations and using linear stability theory. Additionally, boundary conditions are presented and discussed. The resulting model has the important feature of having analytical solution. Dispersion relation of internal gravity waves in case of viscous and thermal conductive flow, as well as a comparison to classical non viscous flow dispersion relation are discussed and some results are presented.