Topology optimization applied to 3D rotor flow path design based on the continuous adjoint approach

Author(s)

Okubo Jr, Carlos M. ; Kiyono, Cesar Y. ^[1] ; Sa, Luis F. N. ^[1] ; Silva, Emilio C. N. ^[1]

Affiliation

^[1] Okubo Jr, Jr., Carlos M., Univ Sao Paulo, Dept Mechatron & Mech Syst Engn, Escola Politecn, Av Prof Mello Moraes 2231, BR-05508030 Sao Paulo - Brazil

• Document type: Journal article
• Source: COMPUTERS & MATHEMATICS WITH APPLICATIONS; v. 96, p. 16-30, AUG 15 2021.
• Web of Science Citations: 0

Abstract

Flow behavior inside rotors can be very complicated and with three-dimensional characteristics. This fact added to a large number of free geometrical parameters that can be varied makes the design of these components a difficult task. Optimization techniques can be applied to generate optimized designs for these machines. In this work, a different approach to design rotors by using topology optimization is proposed. An objective function measured at the boundaries and derived from energy dissipation inside the domain is used with the continuous adjoint approach considering a rotating reference frame for the governing equations. Cyclic boundary conditions are used to represent rotational repeating patterns. The Finite Volume Method is used to solve the direct and adjoint problems, and an implementation of the Globally Convergent Method of Moving Asymptotes (GCMMA) is applied. Numerical examples are presented and an optimized design is compared with a traditional one. (AU)

• FAPESP's process: 14/50279-4 - Brasil Research Centre for Gas Innovation
• Grantee: Julio Romano Meneghini
• Support Opportunities: Research Grants - Research Centers in Engineering Program
• FAPESP's process: 19/04596-1 - Development and implementation of additive manufacturing constraints in the topology optimization software Virtual.PYXIS
• Grantee: Cesar Yukishigue Kiyono
• Support Opportunities: Scholarships in Brazil - Technical Training Program - Technical Training