Hydrodynamic Optimization of Marine Propeller and Numerical Investigation of Contra-rotating Propeller

  • Ramin Taheri Sharif University of Technology
  • Karim Mazaheri Sharif University of Technology
  • Afshin Shaygani Sharif University of Technology International Campus
  • Amir Ahmad Zare University of Tehran

Abstract

Here, two approaches have been accomplished. First, a propeller design method based on vortex lattice algorithm is developed and a gradient based optimization algorithm is implemented to optimize the shape and efficiency of a propeller. Second, a method for analysis of a Contra-Rotating propeller (CRP) has been developed. For analysis of the hydrodynamic performance parameters, a vortex lattice method was used by implementing an open-source code which is called OpenProp. One of the Sequential Unconstraint Minimization Techniques (SUMT) is employed to minimize the torque coefficient as an objective function, while keeping the thrust coefficient constant as a constraint. Also, chord distribution is considered as a design variable. A DTMB 4119 propeller has been optimized to achieve a lower torque coefficient than the original value. The scheme presented here is more efficient and less time consuming with respect to conventional methods. Solution of the optimization problem showed that nearly 13% improvement for propeller efficiency and nearly 15% decrease in torque coefficient is possible. The method presented for Contra-Rotating propeller (CRP) analysis is called coupled. Cavitation analysis has been done to show the robustness of the scheme.

Author Biographies

Ramin Taheri, Sharif University of Technology
Graduate student in Aerospace Engineering with the bachelor degree of Mechanical Engineering
Karim Mazaheri, Sharif University of Technology
Professor of Aerospcae Engineering Department
Afshin Shaygani, Sharif University of Technology International Campus
Master Student in Mechanical Engineering
Amir Ahmad Zare, University of Tehran
Master Student in Mechanical Engineering

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Published
2013-03-31
How to Cite
Taheri, R., Mazaheri, K., Shaygani, A., & Zare, A. A. (2013). Hydrodynamic Optimization of Marine Propeller and Numerical Investigation of Contra-rotating Propeller. Majlesi Journal of Energy Management, 2(1). Retrieved from http://journals.iaumajlesi.ac.ir/em/index/index.php/em/article/view/24
Section
Articles