Turbulent transportation of hybrid nanofluid in a tube with helical tapes utilizing in solar system

In current article, absorber pipe of solar unit has been analyzed considering complex turbulator and hybrid nanomaterial. The average value of radiation flux has been considered as outer wall boundary condition. The base fluid is H2O and addition of CNT and iron oxide were selected as nano-powders. The turbulent regime was modeled via K-e and features of nanofluid were derived according to single-phase technique. Two shapes of turbulator were employed and two set of Re were analyzed. Employ of turbulator generates the secondary flow and disrupt the boundary layer. Thus, stronger convective migration of hybrid nanoparticles can be observed with adding external device. With install of obstacle along the twisted tape, temperature decreases about 1% and velocity augments about 12%. With rise of Re, velocity enhances 276%, while temperature declines about 4%. Insert of obstacle makes pressure drop to augment 835% when Re = 5000. The outlet temperature declines about 0.81% with employing simple twisted tape.