Numerical simulation of cooling metal cylinder turbulent flows of water

Development of mathematical models and study the features of the processes of heat exchange, associated with the choice of hydrodynamic and thermal flow parameters of the media to create the required cooling rate of heated metal bodies is a priority direction of scientific theoretical and practical research. Development of mathematical models, numerical algorithm for solving the dual problem and their own implementation, will allow for immediate verification and correction algorithms model and bills allowing for the cooling process of hot metal body fluid flows. The paper presents a mathematical model of convective heat transfer coolant flow, moving along the surface of the heated metal cylinder. Mathematical model of cooling is given in a two-dimensional non-stationary formulation, taking into account the axisymmetric flow of the cooling fluid flow relative to the longitudinal axis of the cylinder. To solve a system of equations used by the control volume method. the flow field parameters calculated algorithm SIMPLE. For the iterative solution of systems of linear algebraic equations of the method of Gauss–Seidel with lower relaxation. The results of numerical calculations of the parameters of convective heat transfer during initial heating cylinder temperature characteristic of high bodies, on their surface, the cooling process occurs with the boiling liquid. The values of a heated cylinder temperatures in a linear and radial directions with a stream of cooling the coolant at speeds typical for turbulent flow regime. Analyzes the intensity change of the surface temperature of the metal cylinder, depending on the water flow rate and time of cooling.