Effect of full length twisted tape inserts on heat transfer and friction factor enhancement with Fe_3O_4 magnetic nanofluid inside a plain tube: An experimental study

摘要

Turbulent convective heat transfer and friction factor characteristics of magnetic Fe_3O_4 nanofluid flowing through a uniformly heated horizontal circular tube with and without twisted tape inserts are estimated experimentally. Experiments are conducted in the particle volume concentration range of 0 < φ < 0.6%, twisted tape inserts of twist ratio in the range of 0