Slug-bubble regime identification in a square channel using a IR Sensor S Aafrin Sulthana., T Marieswaran., N Braghadesh., N Mithran. and M Venkatesan. MATEC Web of Conferences, 172 (2018) 01002 Published online: 12 June 2018 DOI: 10.1051/matecconf/201817201002