Visualization of air flow separation past dry and wet tubes Ph. Speck, Y. M. Gbamele, Ph. Desevaux, P. K. Panday and J. P. Prenel Eur. Phys. J. AP, 18 1 (2002) 57-61 Published online: 15 April 2002 DOI: 10.1051/epjap:2002027