Blades optimal design of squirrel cage fan based on Hicks-Henne function

Abstract

The traditional single-arc blade used in the squirrel cage fan is simple in structure and cannot meet relevant parameterized design requirements. In order to improve the aerodynamic performance of single-arc blades of squirrel cage fans an improved Hicks-Henne function was used in this study to parameterize the blade expression in a Q35 single-suction squirrel cage fan. The AE criterion was used to optimize the Latin hypercube design, a Co-Kriging agent model was established with High and low confidence samples, and the NSGA-II algorithm was combined with the flow rate and total pressure efficiency as a multi-objective optimization goal. A set of optimal blade parameters was selected under the premise that the flow meets the design requirements. The optimized fan's total pressure and total pressure efficiency were improved at each working point. At the design working point, the fan's total pressure increased by about 23Pa, the effective air volume increased by 1.18m³/min, and the total pressure efficiency improved by 3.31%.

Integrated aerodynamic optimization for stationary components of squirrel cage fan Considering impeller-Volute interaction

“…Hence for the purpose of energy conservation, researchers from both academic and industry communities have devoted numerous efforts to elevate the aerodynamic performance of squirrel cage fans by redesigning or optimizing the impeller blade. [1][2][3] With deeper understanding of the loss mechanisms in the squirrel cage fan, increasing attention is paid to investigation of the stationary components, i.e., the inlet nozzle and the outlet volute. The flow in the stationary components has a large pressure gradient or a non-uniform pattern, and then causes considerable energy los.…”

IGV Optimization for a Large Axial Flow Fan Based on MRGP Model and Sobol’ Method

“…The installation angle of blades and speed were optimized, and the fan efficiency was improved by 2.4%. Based on the Hicks-Henne equation, Huaxin Zhou et al (Zhou et al, 2020) designed the optimal route for implementing multi-blade centrifugal fan blades, optimized the blade inlet and outlet installation angles, and improved the air volume and efficiency of the fan. Tolga Baklacioglua et al (Baklacioglu et al, 2015) modified the algorithm parameters based on the characteristics of algorithms and applied this method to the field of turboprop engines.…”