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Macroscopic balance model for wave rotorsA mathematical model for multi-port wave rotors is described. The wave processes that effect energy exchange within the rotor passage are modeled using one-dimensional gas dynamics. Macroscopic mass and energy balances relate volume-averaged thermodynamic properties in the rotor passage control volume to the mass, momentum, and energy fluxes at the ports. Loss models account for entropy production in boundary layers and in separating flows caused by blade-blockage, incidence, and gradual opening and closing of rotor passages. The mathematical model provides a basis for predicting design-point wave rotor performance, port timing, and machine size. Model predictions are evaluated through comparisons with CFD calculations and three-port wave rotor experimental data. A four-port wave rotor design example is provided to demonstrate model applicability. The modeling approach is amenable to wave rotor optimization studies and rapid assessment of the trade-offs associated with integrating wave rotors into gas turbine engine systems.
Document ID
19960016115
Acquisition Source
Headquarters
Document Type
Conference Paper
Authors
Welch, Gerard E.
(NASA Lewis Research Center Cleveland, OH United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1996
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
E-10022
NASA-TM-107114
NAS 1.15:107114
AIAA Paper 96-0243
ARL-TR-925
Meeting Information
Meeting: 34th Aerospace Sciences Meeting and Exhibit
Location: Reno, NV
Country: United States
Start Date: January 15, 1996
End Date: January 18, 1996
Sponsors: American Inst. of Aeronautics and Astronautics
Accession Number
96N22153
Funding Number(s)
PROJECT: RTOP 505-62-75
PROJECT: DA Proj. IL1-61102-AH-45
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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