Experimental and CFD analysis on heat transfer and fluid flow characteristic of a tube equipped with variable pitch twisted tapeSagar Paneliya, Parth Prajapati, Umang Patel, Ingit Trivedi, Anshu Patel, Krunal Patel and Sakshum KhannaE3S Web Conf., 116 (2019) 00058DOI: https://doi.org/10.1051/e3sconf/201911600058