波节管管程流动与传热的数值仿真

In this paper，based on fluent,flow and heat transfer in three types of corrugated tube was numerically simulated. And we compared the result to the corresponding straight pipe. In the flow characteristics, compare to straight pipe, the pressure field, velocity field and temperature field of 2# corrugated tube were analyzed in the condition that inlet velocity u is 1.5m/s . Besides that, in order to find out the relationship between the vortex size and D1, the path line and velocity vector in the peak of corrugated tube were contrasted among three different kinds of D1. In the heat transfer characteristics, the temperature field and velocity field of 2# corrugated tube and straight pipe were analyzed by field synergy principle in the condition that inlet velocity u is 1.5m/s. Distribution of local Nusselt number in the corrugated tube was analyzed in the condition inlet velocity u is 1.5m/s and point out the max values appear in the downstream of each peak . In addition, average Nusselt number was contrasted among 3 kinds of corrugated tubes. At last, 2# corrugated tube was assessed comprehensively at the different inlet veclocities.