Advanced Integrated Design Optimization System Using 3D Aerodynamic and Aero-Acoustic Analyses for Design of an Axial Fan

A2 - Optimization & Design Methods

In this work, an integrated fan design system, namely, Total FAN Plus®, was developed to carry out a series of design process, i.e., computational preliminary design, three-dimensional (3-D) aerodynamic and aero-acoustic analyses, and design optimization, for four different types of fan (axial, forward and backward blades centrifugal fans, and regenerative blower).
In the design part, a computerized preliminary design system is used for constructing 3-D blade and casing geometry of a fan and predicting aerodynamic performance based on the simple analytical methods. And, in the analysis part, 3-D computation domain is automatically generated on the basis of data obtained from computerized preliminary design and configured to a grid type, i.e., coarse, standard or fine. And, aero-acoustic characteristics are estimated in the noise part. The noise analysis is implemented in a finite./infinite element framework by solving the variational formulation of Lighthill’s analogy, using the transient analysis results obtained from the analysis part. Finally, in the optimization part, single- or multi-objective design optimization of the fan is performed using surrogate model.