Abstract
In order to study the cold flow field of strut, three-dimensional LES (large eddy simulation) of strut flame-holder with cavity at Ma=0.06 and Ma=0.09 was carried out respectively. The simulation results were compared with experiment data. It showed that the flow field structure of three-dimensional LES was similar with that of experiment. What's more, two quantitative comparisons in the frequency of wake vortex and time-averaged stream-wise velocity on strut rear section were made. And the maximum relative errors were 9.4% and 7.7% respectively, proving that the model of numerical calculation at boundary conditions was correct and believable. Then by analyzing the three-dimensional flow field of strut, a conclusion that the faster velocity means the bigger size and intensity of wake vortex. Besides, the result of three-dimensional LES shows an obvious phenomenon of three-dimensional effect which gets stronger when the velocity gets faster.
| Original language | English |
|---|---|
| Pages (from-to) | 607-613 |
| Number of pages | 7 |
| Journal | Hangkong Dongli Xuebao/Journal of Aerospace Power |
| Volume | 32 |
| Issue number | 3 |
| DOIs | |
| State | Published - 1 Mar 2017 |
Keywords
- After-burner
- Cavity
- Large eddy simulation
- Strut
- Three-dimensional effect
- Wake vortex
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