Open AccessMulti-disciplinary framework for propeller blade design
Author(s) -
Andreas Kümmel,
Christian Breitsamter
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1024/1/012060
Subject(s) - propeller , aerodynamics , aeroelasticity , finite element method , blade (archaeology) , blade element momentum theory , modular design , computer science , deflection (physics) , python (programming language) , blade element theory , multidisciplinary design optimization , engineering , structural engineering , mechanical engineering , aerospace engineering , marine engineering , turbine blade , multidisciplinary approach , social science , physics , turbine , optics , sociology , operating system
Improved propeller designs are necessary to ensure an eco-friendly and resource-saving operation. The shape optimization of propellers involves different disciplines, which include the aerodynamics and the structural characteristics of the propeller. The requirements of the individual disciplines for the propeller design are contradictory and compromises must be made. To deal with this complex optimization task, a modular multi-disciplinary optimization framework is developed. The framework is based on a Python control script, which invokes the individual analysis modules. Within the framework, a blade element momentum theory approach for the aerodynamic analysis and a finite element method for the structural analysis are used. This allows for an efficient calculation of various designs. In a first step, a pure aerodynamic optimization is conducted. In a second step, structural constraints in form of the permissible material stress and the propeller blade tip deflection are considered. The results are compared to a design method, which calculates the blade shape for minimal induced losses.