drag reduction of turbulent flows in a curved pipe due to the swirling instability
Takami, T., Yanase, S., Maruyama, Y., Araki, K.
three-dimensional flow, turbulent flow, swirling flow, secondary flow, vortex, curved pipe, drag reduction
日本機械学会論文集, 66巻, 644号, B編, pp.997-1003