Spiros Zafeiris

Mr. Spiros Zafeiris

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Research Focus & Metrics

Academic Career Length

4Years (2023-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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13 March 2024 in Computers & Mathematics with Applications
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Journal Article
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SZSpiros Zafeiris
Spiros Zafeiris
George PapadakisGeorge Papadakis
George Papadakis

Verified
Journal Article
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DADimitra Anevlavi
Dimitra Anevlavi
SZSpiros Zafeiris
Spiros Zafeiris
George PapadakisGeorge Papadakis
George Papadakis
Kostas BelibassakisKostas Belibassakis
Kostas Belibassakis
This work addresses the effects of blade tip-rake reformation on the performance of marine propellers using a low-cost potential-based vortex-lattice method (VLM) and the high fidelity artificial compressibility CFD-RANS solver MaPFlow. The primary focus lies on determining whether the low-cost VLM, in conjunction with a multidimensional parametric model for the tip-rake and pitch/camber distributions, can produce a propeller geometry with improved efficiency. Due to the availability of experimental and numerical data, the NSRDC 4381-82 propellers were selected as reference geometries. Torque minimization serves as the objective function in the gradient-based optimization procedure under a thrust constraint, which translates into efficiency enhancement at the selected design advance ratio. The optimized 4381 propeller yields a +1.1% improvement in efficiency based on CFD-RANS, whereas for the modified skewed 4382 propeller, the efficiency gain is +0.5%. The performance enhancement is also evident at a region near the design advance ratio. The results suggest that the exploitation of low-cost VLM solvers can significantly reduce the CFD simulations required in the optimization process and thus can be effectively used for the design of propellers with tip-rake reformation.


1 October 2025
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Book Chapter
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SZSpiros Zafeiris
Spiros Zafeiris
PMPanagiotis Makridis
Panagiotis Makridis
GPGeorge Papadakis
George Papadakis

24 July 2026 in Ocean Engineering
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Journal Article
Open access
APAlexios Papadimitriou
Alexios Papadimitriou
SZSpiros Zafeiris
Spiros Zafeiris
George PapadakisGeorge Papadakis
George Papadakis