Abstract:

The numerical simulation software, Fluent, was utilized to improve centrifugal fan bladeless guide and its optimum working condition. The model of bladeless guide was built. The main variates are volute width and volute opening. After meshed in Gambit, the inlet flow rate was adjusted under a given working condition. Based on aerodynamic numerical simulation and relative formula, resistance coefficient and rotation coefficient, which would be used to study bladeless guide, were obtained. The result indicated that increase of flow rate ratio, volute width and volute opening will help to reduce resistance coefficient.

Key words:

bladeless guide, centrifugal fan, resistance coefficient, rotation coefficient