Marine Propeller Optimum Design in Wake Flow of Energy Saving Device
| Autor: | Kohei Segawa, Takehiro Ikeda, Koyu Kimura, Satoko Ando |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Operating point
animal structures Computer science business.industry musculoskeletal neural and ocular physiology Design of experiments technology industry and agriculture Propeller macromolecular substances Wake Computational fluid dynamics body regions Potential flow Shape optimization business Marine engineering Parametric statistics |
| Zdroj: | Lecture Notes in Civil Engineering ISBN: 9789811546235 |
| Popis: | In this paper, the result of investigation of a high efficient propeller shape in complicated wake distribution generated by a stern duct which is one of energy saving devices is presented. So far, authors have introduced a propeller optimum design system [1] combining Computational Fluid Dynamics analysis, design of experiments, response surface method and genetic algorithm. However, it was limited to performing shape optimization in a uniform flow, and operating point of the propeller, that is, relationship between propeller rotation and engine output is not taken into account. Therefore, in this paper, authors firstly improve the system so that these relationships which are essential for the actual propeller design are taken into account. Secondly authors enabled shape optimization both in uniform flow and in a wake distribution at the same time. The pitch distribution and the maximum camber distribution in the radial direction of the propeller are adopted as the design variables and the propeller efficiency in both a uniform flow and a wake flow is adopted as the objective function. Parametric studies are performed with this improved design system. Finally, from the results obtained by the parametric study, model propellers are made and tank tests are performed to confirm the propeller performance. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|