In order to explore fouling mechanism of nanoparticles in hole-punched vortex generator
magnesia nanoparticles were used experimentally in rectangular wing vortex generator with hole-punched at waist groove
which factors of inlet temperature
concentration
flow velocity
longitudinal space and attacking angle of vortex generator were studied. The experimental results showed good anti-fouling performance of the waist-groove-punched rectangular wing vortex generator and its significant dependence on operating conditions. High flow velocity
low magnesia particle concentration
low inlet temperature and short longitudinal space could enhance anti-fouling capability. The best anti-fouling was at the attacking angle of 60°.