ISSN Online: 2377-424X
International Heat Transfer Conference 12
Flow features and heat transfer in the separation region of obstacles in a transient free boundary layer
Аннотация
This study describes results of experiments on flow visualizations and local convective heat transfer of 3D
cylinder embedded in a transient natural boundary layer under uniform heat flux boundary condition.
Especially, emphasis is put on the influence of the angular positions of the cylinder around a given axis and on
its square or circular geometry on both local thermal measurements and flow patterns.For example, it is shown
that only for the prism, a 60° position induces a singular behaviour by reducing the convective heat transfer
coefficient ; this singularity is confirmed with visualizations of the separation region.