Określenie wymiany ciepła pomiędzy wiązką regularnych prętów i płynem podczas podłużnego laminarnego przepływu metodą kollokacji brzegowej

The steady longitudinal laminar flow along a system of cylindrical rods is considered. The heat transfer between the rods and fluid is taken into account, where the rods are assumed to be heat sources. The system consist of the parallel rods each of them is placed in cylindrical tube. Three different patterns of lattice (perpendicular normal cross section of system) are considered: triangular, square and hexagonal. Using boundary collocation method the problem of fluid flow and heat transfer in the system is solved. The Nusselt's number for wide range of the surface ratio is determined.