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Validation by PIV of the numerical study of flow in the two-dimensional turning diffuser

Nordin, Normayati and Abdul Karim, Zainal Ambri and Othman, Safiah and R.Raghavan, Vijay and Md Seri, Suzairin and Shaari, Muhammad Farid and adzila, sharifah Validation by PIV of the numerical study of flow in the two-dimensional turning diffuser. In: 5th International Conference on Production, Energy and Reliability , 15 - 17 August 2016, Kuala Lumpur.

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Abstract

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).

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: diffuser; CFD; PIV; validation
Subjects: T Technology > TJ Mechanical engineering and machinery > TJ1-162 Mechanical engineering and machinery
Divisions: Faculty of Mechanical and Manufacturing Engineering > Department of Engineering Mechanics
Depositing User: Mrs. Normayati Nordin
Date Deposited: 21 Sep 2016 08:27
Last Modified: 21 Sep 2016 08:27
URI: http://eprints.uthm.edu.my/id/eprint/8327
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