100-kHz burst-mode particle image velocimetry: space-time correlations and considerations for spatial and temporal resolution
作者： Joseph D. Miller , Naibo Jiang , Daniel Thul , Mikhail Slipchenko , Jason Mance
DOI: 10.2514/6.2016-0025
关键词:
摘要: 100-kHz particle image velocimetry is demonstrated using a double-pulsed burst-mode laser with record length of 100 ms. Pulse doublets inter-pulse spacing 1–5 μs and repetition rate kHz are generated fiber-based oscillator amplified through an all-diode pumped amplifier. Pre-compensation pulse width intensity enable control output energy even for unequally spaced sequences. Spatial temporal resolution the velocity measurements quantified to be sufficient investigating space–time correlations in highly turbulent diffusion jets jet-diameter Reynold’s Numbers from 14,000–43,000. Quantitative assesments standard integral time scale definitions made along resolved compared Taylor’s Frozen Turbulence Hypothesis flows.
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