New inverse method of centrifugal pump blade based on free form deformation

• Published in: IOP conference series. Materials Science and Engineering Vol. 52; no. 2; pp. 22016 - 6
• Main Authors: Zhang, R H, Guo, M, Yang, J H, Liu, Y, Li, R N
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.01.2013
• Subjects: Blades; Centrifugal pumps; Computational fluid dynamics; Deformation; Energy distribution; Fluid flow; Free form; Inverse method; Lattices; Pumps; Three dimensional models; Turbulence
• ISSN: 1757-8981; 1757-899X
• DOI: 10.1088/1757-899X/52/2/022016

In this research, a new inverse method for centrifugal pump blade based on free form deformation is proposed, the free form deformation is used to parametric the pump blade. The blade is implanted to a trivariate control volume which is equally subdivided by control lattice. The control volume can be deformed by moving the control lattice, thereupon the object is deformed. The flow in pump is solved by using a three dimensional turbulent model. The lattice deformation function is constructed according to the gradient distribution of fluid energy along the blade and its objective distribution. Deform the blade shape continually according to the flow solve, and we can get the objective blade shape. The calculation case shows that the proposed inverse method based on FFD method is rational.