| Autor: |
David G. MacManus, Domenico di Cugno, Vassilios Pachidis, Grant McLelland |
| Rok vydání: |
2012 |
| Předmět: |
|
| Zdroj: |
Volume 8: Turbomachinery, Parts A, B, and C. |
| DOI: |
10.1115/gt2012-68718 |
| Popis: |
The aim of this research is to identify a method of prescribing boundary conditions for CFD studies of vortex ingestion. The work illustrates the use of a validated vortex model which has been shown to give good agreement with experimental data. The model is used to generate the vortex velocity and pressure distributions. Prior knowledge of the vortex strength, core radius, Vatistas model constant, and maximum axial velocity perturbation is required. The model has been generalized, which allows any vortex location on the inlet boundary to be specified. Two examples are given. The first case is for a convecting wing-tip vortex. The second is for a ground vortex prescribed at the inlet of the compressor system. The ground vortex model is based on experimental data as well as previous validated CFD studies. A preliminary assessment of the effect of ground vortex ingestion on the performance of NASA Rotor 67 is carried out using the boundary conditions proposed. Furthermore, a sensitivity analysis on the boundary condition components was completed. The use of such boundary conditions can reduce the resource requirements and enables the independent specification of a vortical flow distortion for controlled parametric investigations of intake or compressor sensitivity studies.Copyright © 2012 by ASME |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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