Influence of Size of Tetrahedral Vortex Generators on Characteristics of MgO Particulate Fouling

The mechanism of the particulate fouling on the rectangular channel with tetrahedral vortex generators was investigated using magnesia nanoparticles. Using a set of orthogonal experiments, the effects of the height, length and width of the tetrahedral generators were investigated. The influence of longitudinal spacing was also studied. The experimental results showed that tetrahedral vortex generators had a certain anti-fouling capability. The height and width of the tetrahedral vortex generator had a significant impact on the characteristics of particulate fouling. The height had the largest influence on the characteristics of particulate fouling, the width had the second largest influence, while the length had the least influence. The anti-fouling capability of tetrahedral vortex generator was improved by increasing the height and the width, while the capability was worsened by increasing the length. Tetrahedral vortex generators with height of 6 mm, length of 20 mm, and width of 30 mm showed the best anti-fouling capability within the scope of the experiments.