原文传递
A three-dimensional Navier-Stokes stage analysis of the flow through a compact radial turbine
| 题名： | A three-dimensional Navier-Stokes stage analysis of the flow through a compact radial turbine |
| 作者： | Heidmann, James D. |
| 关键词： | navier-stokes；three-dimensional；turbine；compact；through；stage；radial；analysis；flow；distribution |
| 摘要： | A steady, three dimensional Navier-Stokes average passage computer code is used to analyze the flow through a compact radial turbine stage. The code is based upon the average passage set of equations for turbomachinery, whereby the flow fields for all passages in a given blade row are assumed to be identical while retaining their three-dimensionality. A stage solution is achieved by alternating between stator and rotor calculations, while coupling the two solutions by means of a set of axisymmetric body forces which model the absent blade row. Results from the stage calculation are compared with experimental data and with results from an isolated rotor solution having axisymmetric inlet flow quantities upstream of the vacated stator space. Although the mass-averaged loss through the rotor is comparable for both solutions, the details of the loss distribution differ due to stator effects. The stage calculation predicts smaller spanwise variations in efficiency, in closer agreement with the data. The results of the study indicate that stage analyses hold promise for improved prediction of loss mechanisms in multi-blade row turbomachinery, which could lead to improved designs through the reduction of these losses. |
| 报告类型： | 科技报告 |
相关文献
- National Transportation Safety Board Aircraft Accident Investigation Supported
- Modeling Vessel-Generated Currents and Bed Shear Stresses.
- An Experimental and Numerical Study of Icing Effects on the Performance and Controllability of a Twin Engine Aircraft
- Ice accretion and performance degradation calculations with LEWICE NS
- Modular Approach to Model Oscillating Control Surfaces Using Navier Stokes Equations.
- Navier-Stokes Analysis of the Flowfield Characteristics of an Ice Contaminated Aircraft Wing
检索历史
应用推荐
