Greek Section Technical Meeting Report on
2012 NTUA Student Theses Competition
Report by Christos Kontovas
On January 17th ,in the presence of some 50 members & visitors, the fourth technical meeting of the Greek Section for the 2012-2013 season took place, during which four students of the School of Naval Architecture and Marine Engineering at the National Technical University of Athens presented their diploma theses completed during 2012. Each of these theses had been submitted by each of the four divisions of the School, and were as follows (authors in alphabetical order):
- Lambros Nikolopoulos: "A Holistic Methodology for the Optimization of Tanker Design and Operation and its Applications" (Supervisor: Prof. A. Papanikolaou)
- Charalambos Souliotis: "Study of the Loading on Stranded Ships and their Response, with the Finite Elements Method" (Supervisor: Prof. Manolis Samuelides)
- Nikolaos Stamoudis: "A Two Component Evaporation Model for Marine Diesel Engines". (Supervisor: Ass. Prof. L. Kaiktsis)
- Evangelia Velentza: "Calculation of Potential Flow past a Sailing Yacht" (Supervisor: Prof. G. Tzambiras)
The presentations were graded with respect to value and usefulness of the thesis topic, quality of the thesis work and research done and the quality of presentation by a six member judging committee. The winner was Lambros Nikolopoulos, who received from the Greek Section a prize of 500 euro and was accompanied by a Certificate. The other three contestants will receive a free SNAME membership for 2013.
( from left to right ): C. Kontovas, EC Member; N. Stamoudis, E. Velentza, L. Nikolopoulos (holding the winner’s Certificate), C. Souliotis, Student competitors; P. Lalangas, Secretary / Treasurer.
The winning thesis presents a holistic methodology that was developed for the systematic variation and optimization of innovative tanker designs using principles of Risk Based Ship Design. The primary case study was the design concept of an AFRAMAX tanker with two longitudinal bulkheads and twin screw/engine/skeg arrangement. A systematic and multi-staged optimization took place producing up to 6000 variants having as an objective the reduction of the Required Freight Rate (indicative of transportation costs and including building, operational and crewing costs), the Accidental Oil Outflow Index (as defined by MARPOL Reg.23) and the Energy Efficiency Design Index (as adopted by IMO MEPC 62). According to the results presented by the author, there is a significant improvement in all objectives, with the dominant variants being more competitive and efficient than existing conventional designs. A post analysis is made examining the use of LNG as a fuel and new and innovative propulsion systems. In addition, an applicability study has been made for the VLCC segment where the current results show a great potential for additional optimization.
The full text of the diploma thesis can be found online at:
The winning presentation (in English) can be downloaded [[[here]]]
After the meeting the traditional Vassilopita cake for the New Year was cut and then hors d’oeuvres, wine, soft drinks etc. were served. The winner (although absent due to travel) of the Vassilopita lucky coin was the Chair of our Section, Prof. Apostolos Papanikolaou, who will receive the silver paper cutter gift normally given to the authors.
Petros Lalangas (middle) cutting the New Year's Vassilopita,
with K.Maounis (right) and C. Kontovas (left).
the winner presentation can be found below