Simulation and experimental study of airfoil aerator
In order to solve the problems of unsatisfactory velocity distribution, low oxygen filling efficiency, difficult control of dissolved oxygen content and the contradiction between oxygen filling capacity and power efficiency in aerator operation, an airfoil with a logarithmic spiral as the busbar and a NACA0012 airfoil as the cross section was proposed, based on the characteristics of linear parameters and operating parameters of blades. CFD software Fluent was used as the numerical simulation technology to simulate and analyze the influence of airfoil blade on oxygen mass transfer, stirring and pushing flow in oxidation ditch. Three factors, the impeller’s rotating speed and its immersion depth, and the blade incline angle, related to aeration efficiency of surface aerator were studied by experiments, and the maximum dynamic efficiency of two kinds of impellers with different blade inclination angle is found.
Keywords
oxidation ditch,
airfoil,
surface aerator,
CFD numerical simulationAuthors
| Pu Xing | Nanchang Hangkong University | xingpu@nchu.edu.cn |
| Hui Hu | Nanchang Hangkong University | 1703085201013@stu.nchu.edu.cn |
| Yilin Chen | Nanchang Hangkong University | 1803080202001@stu.nchu.edu.cn |
| Hui Wu | Nanchang Hangkong University | 32008@nchu.edu.cn |
| Tsung-chow Su | Florida Atlantic University, College of Engineering and Computer Science | su@fau.edu |
Всего: 5
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