NDLI: Current issues in unsteady turbomachinery flows (images)

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Current issues in unsteady turbomachinery flows (images)

Content Provider	NASA Technical Reports Server (NTRS)
Author	Povinelli Sr., Louis
Copyright Year	2004
Description	Among the numerous causes for unsteadiness in turbo machinery flows are turbulence and flow environment, wakes from stationary and rotating vanes, boundary layer separation, boundary layer/shear layer instabilities, presence of shock waves and deliberate unsteadiness for flow control purposes. These unsteady phenomena may lead to flow-structure interactions such as flutter and forced vibration as well as system instabilities such as stall and surge. A major issue of unsteadiness relates to the fact that a fundamental understanding of unsteady flow physics is lacking and requires continued attention. Accurate simulations and sufficient high fidelity experimental data are not available. The Glenn Research Center plan for Engine Component Flow Physics Modeling is part of the NASA 21st Century Aircraft Program. The main components of the plan include Low Pressure Turbine National Combustor Code. The goals, technical output and benefits/impacts of each element are described in the presentation. The specific areas selected for discussion in this presentation are blade wake interactions, flow control, and combustor exit turbulence and modeling.
File Size	1769940
Page Count	25
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20040121178
Archival Resource Key	ark:/13960/t4qk2cn03
Language	English
Publisher Date	2004-08-01
Access Restriction	Open
Subject Keyword	Fluid Mechanics And Thermodynamics Shear Layers Shock Waves Fluid Dynamics Turbulence Models Flow Characteristics Turbomachinery Unsteady Flow Combustion Chambers Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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