Validation by PIV of the numerical study of flow in the two-dimensional turning diffuser
The primary objective of this study is to validate the numerical method applied in the analysis of two-dimensional turning diffuser performance. A sharp 90o two-dimensional turning diffuser of area ratio, AR = 2.16 operated at inflow Reynolds numbers, Rein = 5.786 x 104 - 1.775 x 105 was considered....
| Main Authors: | , , , , , , |
|---|---|
| Format: | Conference or Workshop Item |
| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/8327/ http://eprints.uthm.edu.my/8327/1/VALIDATION_BY_PIV_OF_THE_NUMERICAL_STUDY_OF_FLOW_IN_THE_TWO%2DDIMENSIONAL_TURNING_DIFFUSER.pdf |
| Summary: | The primary objective of this study is to validate the numerical method applied in the analysis of two-dimensional turning diffuser performance. A sharp 90o two-dimensional turning diffuser of area ratio, AR = 2.16 operated at inflow Reynolds numbers, Rein = 5.786 x 104 - 1.775 x 105 was considered. The applicability of standard (ske), renormalization group (rngke) and realizable (rke) k- turbulence models adopted various near wall treatments namely standard wall functions, non-equilibrium wall functions and enhanced wall treatment to simulate the actual cases was assessed. The ske adopted enhanced wall treatment of y+ » 1.1 - 1.8 appears as the best validated model, producing minimal deviation with comparable flow structures to the experimental cases (using particle image velocimetry). |
|---|