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1. Seagrass blade motion under waves and its impact on wave decay: BLADE MOTION AND WAVE DECAY

   https://doi.org/10.1002/2017JC012731  

   Luhar, M.; Infantes, E.; Nepf, H. (May 2017, Journal of Geophysical Research: Oceans)
2. Blade dynamics in combined waves and current

   https://doi.org/10.1016/j.jfluidstructs.2019.03.020  

   Lei, Jiarui; Nepf, Heidi (May 2019, Journal of Fluids and Structures)

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3. Propagating Instability in Deployable Propeller Blade Structures

   https://doi.org/10.2514/6.2024-0272  

   Li, Bowen; Kwok, Kawai (January 2024, American Institute of Aeronautics and Astronautics)
4. Evidence of lithic blade technology in southwest Madagascar

   https://doi.org/10.1080/15564894.2022.2152139  

   Davis, Dylan S.; Manahira, George; Lahiniriko, François; Andriankaja, Vanillah; Carnat, Tahirisoa Lorine; Clovis, Marius Brenah; Fenomanana, Felicia; Hubertine, Laurence; Justome, Ricky; Léonce, Harson; et al (February 2023, The Journal of Island and Coastal Archaeology)

   This rapid communication describes a lithic blade that was recently recovered during excavations in the Velondriake Marine Protected Area in southwest Madagascar. This represents the only recorded archaeological lithic blade recovered from southwest Madagascar. The blade was recovered in situ at a depth of 1.66 m, a deposit dating to between 750 and 1200 BP at site G134, adjacent to the modern village of Antsaragnasoa. While similar in material choice (translucent-brown chert) and morphology (parallel-sided blade) to other lithics recovered at the northern sites of Ambohiposa and Lakaton’i Anja, it is significantly larger than other recorded lithics on Madagascar. More research is required but this finding suggests that lithic technology may have been more widespread on the island, particularly among coastal communities, than previously thought. 

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5. Vorticity reconnection during vortex cutting by a blade

   https://doi.org/10.1017/jfm.2015.531  

   Saunders, D. Curtis; Marshall, Jeffrey S. (November 2015, Journal of Fluid Mechanics)

   A computational study of vorticity reconnection, associated with the breaking and reconnection of vortex lines, during vortex cutting by a blade is reported. A series of Navier–Stokes simulations of vortex cutting with different values of the vortex strength are described, and the different phases in the vortex cutting process are compared to those of the more traditional vortex tube reconnection process. Each of the three phases of vortex tube reconnection described by Melander & Hussain ( Phys. Fluids  A, vol. 1(4), 1989, pp. 633–635) are found to have counterparts in the vortex cutting problem, although we also point out numerous differences in the detailed mechanics by which these phases are achieved. Of particular importance in the vortex cutting process is the presence of vorticity generation from the blade surface within the reconnection region and the presence of strong vortex stretching due to the ambient flow about the blade leading edge. A simple exact Navier–Stokes solution is presented that describes the process by which incident vorticity is stretched and carried towards the surface by the ambient flow, and then interacts with and is eventually annihilated by diffusive interaction with vorticity generated at the surface. The model combines a Hiemenz straining flow, a Burgers vortex sheet and a Stokes first problem boundary layer, resulting in a nonlinear ordinary differential equation and a partial differential equation in two scaled time and distance variables that must be solved numerically. The simple model predictions exhibit qualitative agreement with the full numerical simulation results for vorticity annihilation near the leading-edge stagnation point during vortex cutting. 

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