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Orifice Mass Flow Calculation in NASA's W-8 Single Stage Axial Compressor FacilityUpdates to the orifice mass flow calculation for the W-8 Single Stage Axial Compressor Facility at NASA Glenn Research Center are provided to include the effect of humidity and incorporate ISO 5167. A methodology for including the effect of humidity into the inlet orifice mass flow calculation is provided. Orifice mass flow calculations provided by ASME PTC-19.5-2004, ASME MFC-3M-2004, ASME Fluid Meters, and ISO 5167 are compared for W-8's atmospheric inlet orifice plate. Differences in expansion factor and discharge coefficient given by these standards give a variation of about +/- 75% mass flow except for a few cases. A comparison of the calculations with an inlet static pressure mass flow correlation and a fan exit mass flow integration using test data from a 2017 turbofan rotor test in W-8 show good agreement between the inlet static pressure mass flow correlation, ISO 5167, and ASME Fluid Meters. While W-8's atmospheric inlet orifice plate violates the pipe diameter limit defined by each of the standards, the ISO 5167 is chosen to be the primary orifice mass flow calculation to use in the W-8 facility.
Document ID
20180001298
Acquisition Source
Glenn Research Center
Document Type
Technical Memorandum (TM)
Authors
Bozak, Richard F. (NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
February 20, 2018
Publication Date
February 1, 2018
Subject Category
Fluid Mechanics And Thermodynamics
Aeronautics (General)
Report/Patent Number
NASA/TM-2018-219762
E-19474
GRC-E-DAA-TN50467
Funding Number(s)
WBS: WBS 081876.02.03.50.03.06
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Keywords
Aerodynamics
Measurement
Compresso

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