Wing-type longitudinal vortex generators were employed for performance enhancement of finned tube heat exchanger elements. Teh effect of finite fin heat conduction on the performance of fins and longitudinal vortex generators was considered. Three-dimensional developing laminar flows and conjugate heat transfer in high performance finned oval tube elements, with and without punched deltawinglets, were studied numerically with a Finite-Volume Method. Body-fitted grids were used to satisfy exactly the thermal and hydrodynmaic boundary conditions. The conjugate heat transfer was realized by iterations of convection in the flow field and conduction in the fin. Reynolds numbers of 100展开▼
