Changcharoen, W.; Somravysin, P.; Promthaisong, P.; Eiamsa-ard, P.; Nanan, K.; Eiamsa-ard, S. Investigation of turbulent heat transfer in round tubes fitted with regularly spaced overlap dual twisted tape elements. J. Res. Appl. Mech. Eng. 2018, 3, 64-74.