Abstract
100-kHz particle image velocimetry is demonstrated using a double-pulsed burst-mode laser with record length of 100 ms. Pulse doublets with inter-pulse spacing of 1-5 μs and repetition rate of 100 kHz are generated using a fiber-based oscillator and amplified through an all-diode pumped burst-mode amplifier. Pre-compensation of oscillator pulse width and pulse intensity enable control of output pulse energy even for unequally spaced pulse sequences. Spatial and temporal resolution of the velocity measurements is quantified and demonstrated to be sufficient for investigating space-time correlations in highly turbulent diffusion jets with jet-diameter Reynold’s Numbers from 14,000-43,000. Quantitative assesments of standard integral time and length scale definitions are made along with highly resolved space-time correlations and compared with Taylor’s Frozen Turbulence Hypothesis for turbulent flows.
| Original language | English (US) |
|---|---|
| Title of host publication | 54th AIAA Aerospace Sciences Meeting |
| Publisher | American Institute of Aeronautics and Astronautics Inc, AIAA |
| ISBN (Print) | 9781624103933 |
| State | Published - 2016 |
| Externally published | Yes |
| Event | 54th AIAA Aerospace Sciences Meeting, 2016 - San Diego, United States Duration: Jan 4 2016 → Jan 8 2016 |
Publication series
| Name | 54th AIAA Aerospace Sciences Meeting |
|---|---|
| Volume | 0 |
Other
| Other | 54th AIAA Aerospace Sciences Meeting, 2016 |
|---|---|
| Country/Territory | United States |
| City | San Diego |
| Period | 1/4/16 → 1/8/16 |
Bibliographical note
Publisher Copyright:© 2016, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
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