Experimental and numerical investigation of odorant dispersion in natural-gas pipelines Mahdi Deymi-Dashtebayaz, Reza Nazeri Boori Abadi, Majid Mehdian Dehkordi and Zohreh Amini Eur. Phys. J. Plus, 134 6 (2019) 294 Published online: 26 June 2019 DOI: 10.1140/epjp/i2019-12666-2