Assessment of different turbulence models in simulating axisymmetric flow in suddenly expanded nozzles
A numerical simulation was carried out to compare various turbulence models simulating axisymmetric nozzle flow past suddenly ex-panded ducts. The simulations were done for L/D = 10. The convergent-divergent nozzle has been modeled and simulated using the turbu-lence models: The Standard k-ε model,...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
Science Publishing Corporation
2018
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/66138/ http://irep.iium.edu.my/66138/ http://irep.iium.edu.my/66138/ http://irep.iium.edu.my/66138/1/66138_Assessment%20of%20different%20turbulence%20models.pdf http://irep.iium.edu.my/66138/7/66138_Assessment%20of%20different%20turbulence%20models%20in%20simulating_SCOPUS.pdf |
| Summary: | A numerical simulation was carried out to compare various turbulence models simulating axisymmetric nozzle flow past suddenly ex-panded ducts. The simulations were done for L/D = 10. The convergent-divergent nozzle has been modeled and simulated using the turbu-lence models: The Standard k-ε model, The Standard k-ω model and The SST k-ω model. Numerical simulations were done for Mach numbers 1.87, 2.2, and 2.58 and the nozzles were operated for NPRs in the range from 3 to 11. From the numerical analysis it is apparent that for a given Mach number and effect of NPR will result in maximum gain or loss of pressure. Numerical results are in good agreement with the experimental results. |
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