Numerical Modeling of the Plume - Thermosiphon Interaction in a Vertical Cylinder: Effect of Vertical Displacement of the Heat Source

In this work, we present a numerical study of natural convection laminar flow resulting from the interaction of a thermal plume with a vertical thermosiphon. The thermal plume is generated by the presence of a heat source. We study, among other, the effects of different positions of the generating source on the overall structure of the flow, the authors study numerically the influence of the vertical location of the generating source to the input of the cylinder, with a volume of control of Patankar method and from the full Navier Stokes equations. A mesh of variable steps was chosen. The pressure is calculated using a projection-type Predictor-corrector method. The numerical solution of the discretized equations was made by the iterative method of relaxation line-by-line, and calculations are stopped when the convergence conditions are met.