Topical Issue on Fluids and Structures: Multi-scale coupling and modeling Luca Biferale, Stefano Guido, Andrea Scagliarini and Federico Toschi Eur. Phys. J. E, 42 3 (2019) 28 Published online: 12 March 2019 DOI: 10.1140/epje/i2019-11808-9