Utilizing a Piezoelectric Fan for Heat Transfer Enhancement on Convex Surfaces
Using the dynamic mesh technique,a numerical investigation is performed to explore the heat transfer enhancement on convex surfaces by the vibrating piezoelectric fan.The effects of the relative curvature of the convex surfaces and configurations of the piezoelectric fan on the flow and heat transfer characteristics are investigated in detail.The results show that the relative curvature of the convex surface has a significant impact on the flow heat transfer performance.With the relative curvature,the adhesion effect of the wall jet is gradually enhanced,then the heat transfer performance of the convex surfaces is also enhanced.In addition,the configurations of the piezoelectric fan mainly affect the temperature distribution on the surface.A dumbbell-like distribution is shown when the piezoelectric fan is under longitudinal configuration.While under the transverse configuration,it presents an X-shaped distribution.In general,the piezoelectric fan under longitudinal configuration can improve the heat transfer performance of the convex surface with large curvature significantly.
piezoelectric fanconvex surfaceheat transfer enhancementstreamlinesimulation
万方数据
维普
