Abstract
The flow field near/vehicle-afterbody is mixture of nozzle internal flow and afterbody external flow and hence is very complicated. By the Reynolds average Navier-stokes equations and turbulent models, the flow field near nozzle/vehicle-afterbody was numerically simulated. The turbulent models are Baldwin-Lomax model for wall shear layer and Prandtl model for wake region. The five kinds of boundary conditions were defined. The effects of nozzle expansion ratio and Mach number of external flow on afterbody drag were analyzed, and the pressure distribution on internal surface of nozzle was given. For the nozzle pressure of 8.0, the computational results are in agreement with test data. It is shown that the proposed method is reliable, and can simulate internal/external flow field of the nozzle and calculate the performance of the nozzle.
| Original language | English |
|---|---|
| Pages (from-to) | 587-590 |
| Number of pages | 4 |
| Journal | Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University |
| Volume | 18 |
| Issue number | 4 |
| State | Published - Nov 2000 |
Keywords
- Integration
- NND scheme
- Nozzle/vehicle-afterbody
- Numerical simulation
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