Unsteady Shock Waves Vortex Shedding Entanglement in a Transonic Turbine Cascade
Abstract
This report describes the design and numerical analysis of a turbine cascade suitable to research the vortex shedding and shock waves coupling. This follows the very successful research model that was used to drive a 60% increase in lift beyond the state-of-the-art for Low Pressure Turbines (LPTs). The selected turbine flow passage enhanced the vortex shedding intensity by using a relatively large trailing edge diameter. This geometry is both government-owned and generic. So, the geometry and all experimental data produced in the study will be distributable throughout the research community, and this can further increase knowledge about the flow field and additional means to control. A potential solution that is being explored is the use of pulsed cooling ejection to control both the vortex shedding and trailing edge shock patterns. The present research may guide aerodynamic designers to novel concepts to modulate shock waves. The current research is high relevance for the design of compact and light future fluid machinery. While the results of such an investigation have bearing on transonic turbines and compressors in particular, the physics that dominate the flow are fundamental and could have applicability to any flow that is dominated by both shocks and vertical disturbances.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 30, 2013
- Accession Number
- ADA587666
Entities
People
- Guillermo Paniagua
Organizations
- von Kármán Institute for Fluid Dynamics