Computational flow and heat transfer of multiple circular jets impinging on a flat surface with effusion |
| |
Authors: | M Ashok kumar B V S S S Prasad |
| |
Institution: | (1) Thermal Turbo machines Laboratory, Indian Institute of Technology Madras, Chennai, 600 036, India |
| |
Abstract: | Computational investigations are reported on the local flow and heat transfer characteristics from staggered, multiple circular
air jets impinging on a flat surface with effusion holes. The geometrical and flow parameters for the computational study
are chosen as per the experimental arrangement of Cho and Rhee J Turbomachinery 123:601–608, (14) so as to explain salient features observed in these experiments. The two peaks in the Nusselt number observed in the case
of H/D = 6 and three peaks in the case of H/D = 2 are attributed to the flow characteristics such as primary vortices forming
an up-wash region, followed by secondary vortices resulting in a secondary stagnation zone. The magnitude of local peak in
heat transfer increases up to 88% with increasing values of D/d from 0.5 to 1.5 at Re = 10,000. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|