When water is used as the working fluid for heat utilization in heat exchanger equipment

it tends to accumulate some sediments and suspended particles in the channel

thus forming particulate fouling

thereby degrading the heat transfer performance. In order to solve the problem of particulate fouling in the heat exchanger channel

this paper adopts numerical simulation to study the effect of different arrangements of rectangular-wing vortex generators on particulate fouling in the pulsating channel

with a focus on the attack angle and spacing of rectangular wing vortex generators. The results show that compared with the smooth channel

the two pulsating channels show better anti-fouling effect

among which the rectangular wing pulsating channel exhibits the best anti-fouling effect. In the rectangular wing pulsating channel

with the increase of the rectangular wing vortex generator flow angle

the fouling resistance gradually decreases. When the attack angle reaches 90°

the wing attains the best anti-fouling effect of 36.8%. With the increase of the rectangular wing vortex generator spacing

the fouling resistance first decreases and then increases. When the spacing is 360 mm

the wing attains the best anti-fouling effect of 41.22%. This study demonstrates that a rectangular wing at 90° attack angle with 360 mm spacing in the pulsating channel achieves optimal anti-fouling effect. This configuration contributes to improving the anti-fouling performance in heat exchanger channels.