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Laser velocimeter application to oscillatory liquid flows
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Gartrell, L. R. |
| Copyright Year | 1978 |
| Description | A laser velocimeter technique was used to measure the mean velocity and the frequency characteristics of an oscillatory flow component generated with a rotating flapper in liquid flow system at Reynolds numbers approximating 93,000. The velocity information was processed in the frequency domain using a tracker whose output was used to determine the flow spectrum. This was accomplished with the use of an autocorrelator/Fourier transform analyzer and a spectrum averaging analyzer where induced flow oscillations up to 40 Hz were detected. Tests were conducted at a mean flow velocity of approximately 2 m/s. The experimental results show that the laser velocimeter can provide quantitative information such as liquid flow velocity and frequency spectrum with a possible application to cryogenic fluid flows. |
| File Size | 2964421 |
| Page Count | 24 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19780018446 |
| Archival Resource Key | ark:/13960/t2v45hw26 |
| Language | English |
| Publisher Date | 1978-05-01 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics And Heat Transfer Laser Doppler Velocimeters Piezoelectric Transducers Liquid Rocket Propellants Fluid Flow Cryogenic Fluids Flow Velocity Velocity Measurement Fast Fourier Transformations Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
