A Loosely Coupled Unsteady Flow Simulation of a Single Stage Compressor
| Autor: | B. Lakshminarayana, Y.-H. Ho |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Stator
Turbulence Rotor (electric) Mechanical Engineering Computational Mechanics Energy Engineering and Power Technology Aerospace Engineering Mechanics Condensed Matter Physics law.invention Physics::Fluid Dynamics Hele-Shaw flow Classical mechanics Mechanics of Materials law Incompressible flow Turbomachinery Mean flow Gas compressor Mathematics |
| Zdroj: | International Journal of Computational Fluid Dynamics. 10:73-89 |
| ISSN: | 1029-0257 1061-8562 |
| Popis: | A steady/unsteady, three-dimensional Navier- Stokes solver that utilizes a semi-implicit, pressure-based solution procedure is developed to simulate the three-dimensional, incompressible flow through a single stage compressor. The present numerical scheme features the implementation of a second-order plus fourth-order artificial dissipation formulation to prevent the numerical oscillation due to central differencing schemes. A low-Reynolds-number form of the two-equation turbulence model is used to account for the turbulence effects. For unsteady flow computations, the coupling between the mean flow properties and the turbulence is enhanced by an inner-iteration procedure during each time step. The steady flow field in the rotor passage is computed first. This is used as input for the computation of the unsteady flow in the subsequent stator. The predicted unsteady pressure on the stator blades and unsteady velocities at several locations inside the passage are compared with the experimental data. The uns... |
| Databáze: | OpenAIRE |
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