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Total pressure averaging in pulsating flows
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Dudzinski, T. J. Krause, L. N. Johnson, R. C. |
| Copyright Year | 1972 |
| Description | A number of total-pressure tubes were tested in a non-steady flow generator in which the fraction of period that pressure is a maximum is approximately 0.8, thereby simulating turbomachine-type flow conditions. Most of the tubes indicated a pressure which was higher than the true average. Organ-pipe resonance which further increased the indicated pressure was encountered within the tubes at discrete frequencies. There was no obvious combination of tube diameter, length, and/or geometry variation used in the tests which resulted in negligible averaging error. A pneumatic-type probe was found to measure true average pressure, and is suggested as a comparison instrument to determine whether nonlinear averaging effects are serious in unknown pulsation profiles. The experiments were performed at a pressure level of 1 bar, for Mach number up to near 1, and frequencies up to 3 kHz. |
| File Size | 721280 |
| Page Count | 22 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19720024666 |
| Archival Resource Key | ark:/13960/t0ms8gs4c |
| Language | English |
| Publisher Date | 1972-01-01 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics Pressure Sensors Pipe Flow Pressure Distribution Turbomachinery Mathematical Models Pipes Tubes Unsteady Flow Pneumatic Probes Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
