Abstract
We measured flow structures with stereoscopic particle image velocimetry (stereo-PIV) in the turbulent wakes of three parachute canopies, which had the same surface area, but different geometries. The tested parachute canopies included ribbon canopy, 8-branches canopy, and cross canopy. The obtained results showed that the geometry of the parachute canopies had significant influences on the flow structures in the wakes of these three canopies. In addition, the variation of Reynolds number did not lead to a dramatic change in the distributions of velocity, vorticity, Reynolds stress, and turbulent kinetic energy.
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This work was supported by the Science and Technology Commission of Shanghai Municipality (Grant 15ZR1442700) and the Fundamental Research Funds for the Central Universities.
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Pasqualini, S., Jin, Z. & Yang, Z. Measurement of the flow structures in the wakes of different types of parachute canopies. Acta Mech. Sin. 34, 225–237 (2018). https://doi.org/10.1007/s10409-017-0710-7
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DOI: https://doi.org/10.1007/s10409-017-0710-7