Bladed Disk Forced Response Augmentation for Research Training (AASERT).
Abstract
Two AASERT students have actively participated in research in turbomachinery fluid dynamics and bladed disk forced response. The academic programs of the AASERT students were individually tailored. One AASERT student investigated nonlinear friction dampers for control of blade row aero-mechanics. The energy balance, harmonic balance, and time integration solution methods were applied to an unstable aero-mechanical model thereby requiring a dry friction damper for stability. The results showed that the linearized harmonic and energy balance solutions can be used in preliminary design or as first guesses for nonlinear methods. The second AASERT student experimentally investigated the fundamental unsteady flow interaction phenomena significant to forced response and unsteady turbine heat transfer. The technical approach involved a series of experiments performed in a low speed research turbine. The rotor blade wake generated unsteady flow field, i.e., the unsteady forcing function, were measured over a range of turbine steady aerodynamic loading conditions. In addition, the unsteady heat transfer to the stator vane row was measured.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1995
- Accession Number
- ADA309956
Entities
People
- Sanford Fleeter
Organizations
- Purdue University