Frequency-based design of a free piston Stirling engine using genetic algorithm
| Autor: | Sh. Zare, A.R. Tavakolpour-Saleh |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Engineering
Work (thermodynamics) Stirling engine Computer simulation business.industry 020209 energy Mechanical Engineering Mechanical engineering 02 engineering and technology Building and Construction Pollution Industrial and Manufacturing Engineering law.invention Power (physics) Piston Matrix (mathematics) General Energy Control theory law Genetic algorithm 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering business Eigenvalues and eigenvectors Civil and Structural Engineering |
| Zdroj: | Energy. 109:466-480 |
| ISSN: | 0360-5442 |
| DOI: | 10.1016/j.energy.2016.04.119 |
| Popis: | This paper focuses on the frequency-based design of a FPSE (free piston Stirling engine) using a GA (genetic algorithm). First, a mathematical description of the FPSE is presented. The engine design parameters including mass and stiffness of power and displacer pistons and cross-sectional area of the displacer rod are considered as unknown variables. Then, based on a desirable operating frequency, positions of closed-loop poles of the engine system are selected. The unknown design parameters are thus found via an optimization scheme using GA. A new objective function based on the eigenvalues of the state matrix of the FPSE is proposed and GA is used to obtain the optimal values of design variables so that the objective function is minimized. Next, the effectiveness of the proposed design is evaluated through numerical simulation. Two mathematical approaches are presented to compute the phase difference between the motions of power and displacer pistons. Furthermore, the generated work and power of the FPSE are found based on the computed phase angle. Finally, the designed FPSE is constructed and primarily tested. It is found that the simulation results are in a good agreement with the experiment through which validity of the presented design technique is affirmed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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