Rough-wall turbulent Taylor-Couette flow: The effect of the rib height Ruben A. Verschoof, Xiaojue Zhu, Dennis Bakhuis, Sander G. Huisman, Roberto Verzicco, Chao Sun and Detlef Lohse Eur. Phys. J. E, 41 10 (2018) 125 Published online: 22 October 2018 DOI: 10.1140/epje/i2018-11736-2