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Aerodynamic and aeroacoustic optimization of leading-edge undulation of a naca 65(12)-10 airfoil (2021)
Journal Article
Kim, J. H., Choi, K. S., Lacagnina, G., Paruchuri, C., Joseph, P., Hasheminejad, S. M., …Pinelli, A. (2021). Aerodynamic and aeroacoustic optimization of leading-edge undulation of a naca 65(12)-10 airfoil. AIAA Journal, 60(4), 2342-2353. https://doi.org/10.2514/1.J060716

Experimental studies of a NACA 65(12)-10 airfoil with a sinusoidal leading-edge undulation (LEU) were carried out to simultaneously optimize its aerodynamic and aeroacoustic performances by considering the attached as well as the separated flow at th... Read More about Aerodynamic and aeroacoustic optimization of leading-edge undulation of a naca 65(12)-10 airfoil.

Early development of artificially initiated turbulent spots (2021)
Journal Article
Wang, Y. X., Choi, K.-S., Gaster, M., Atkin, C., Borodulin, V., & Kachanov, Y. (2021). Early development of artificially initiated turbulent spots. Journal of Fluid Mechanics, 916, Article A1. https://doi.org/10.1017/jfm.2021.152

An experimental investigation was carried out in a low-turbulence wind tunnel to study the early development of artificially initiated turbulent spots in a laminar boundary layer over a flat plate. Their reproducibility allowed us to observe fine str... Read More about Early development of artificially initiated turbulent spots.

Transitional pulsatile flows with stenosis in a two-dimensional channel (2021)
Journal Article
Ding, G., Choi, K.-S., Ma, B., Kato, T., & Yuan, W. (2021). Transitional pulsatile flows with stenosis in a two-dimensional channel. Physics of Fluids, 33(3), Article 034115. https://doi.org/10.1063/5.0042753

Although blood flows are mostly laminar, transition to turbulence and flow separations are observed at curved vessels, bifurcations, or constrictions. It is known that wall-shear stress plays an important role in the development of atherosclerosis as... Read More about Transitional pulsatile flows with stenosis in a two-dimensional channel.