رسالة جامعية
Hydrodynamic simulation of biological propulsion systems and application on the design of optimal marine propulsors ; Υδροδυναμική προσομοίωση βιολογικών συστημάτων πρόωσης και εφαρμογή στη σχεδίαση βέλτιστων συστημάτων πρόωσης πλοίου
| العنوان: | Hydrodynamic simulation of biological propulsion systems and application on the design of optimal marine propulsors ; Υδροδυναμική προσομοίωση βιολογικών συστημάτων πρόωσης και εφαρμογή στη σχεδίαση βέλτιστων συστημάτων πρόωσης πλοίου |
|---|---|
| المؤلفون: | Tsarsitalidis, Vasileios, Τσαρσιταλίδης, Βασίλειος |
| بيانات النشر: | National Technical University of Athens (NTUA) Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ) |
| سنة النشر: | 2015 |
| المجموعة: | National Archive of PhD Theses (National Documentation Centre Greece) |
| مصطلحات موضوعية: | Βιομιμητική πρόωση, Παλλόμενα πτερύγια, Μη συμβατική πρόωση, Biomimetic propulsion, Flapping foil propulsion, Flapping wing propulsion, Oscillating wing, Unconventional propulsion, Επιστήμες Μηχανικού και Τεχνολογία, Περιβαλλοντική Μηχανική, Engineering and Technology, Environmental Engineering |
| الوصف: | The present work is oriented to the use of Boundary Element method (UBEM code) on the simulation of biological propulsion systems for the purpose of understanding phenomenae and extracting conclusions which will lead to the design of optimal marine propulsors. The ise of the specific method was chosen, as it can simulate highly unsteady phenomenae (relatively) quickly, as well as produce concentrated information on the simulated phenomenae.More specifically, after a presentation of the state of the art and an introduction of the typical problem of a biomimetic propulsor, the mathematical model of the boundary element method, the numerical implementation and the application in the used software is introducedThen, the investigations made are presented in cases and effects of parameters are discussed, showcasing the results presented in the published works, but also additional results, from which extended series of propulsors that can be used in a manner compatible to the known design methods. The developed Methodology, along with applications on virtual paradigms are compared to conventional propulsors, where the advantage of the systems in hand are shown.Last but not least, newer developments, concerning the application of hydroelasticity, in the manner of spring loaded wings (1 DOF - pitching motion) along with the initial results of systematic investigations of it as well as active control of the pitching motion. The ability to adapt and operate in an envrionment of random motions, shows the potential of the use of such systems as energy saving devices as well. In the conclusions, proposed applications are shown, both for retrofits and newbuilds, while a zero emmisions concept is introduced. ; H παρούσα εργασία προσανατολίζεται στην χρήση της μεθόδου των συνοριακών στοιχείων (κώδικας UBEM) για την προσομοίωση βιολογικών συστημάτων πρόωσης, με στόχο την κατανόηση φαινομένων και την εξαγωγή συμπερασμάτων που θα οδηγήσουν στην σχεδίαση βέλτιστων προωστήρων πλοίου. Η χρήση της συγκεκριμένης μεθόδου ενδείκνυται, ... |
| نوع الوثيقة: | doctoral or postdoctoral thesis |
| اللغة: | English |
| العلاقة: | http://hdl.handle.net/10442/hedi/35247Test |
| DOI: | 10.12681/eadd/35247 |
| الإتاحة: | https://doi.org/10.12681/eadd/35247Test http://hdl.handle.net/10442/hedi/35247Test |
| حقوق: | BY_SA |
| رقم الانضمام: | edsbas.F124B46D |
| قاعدة البيانات: | BASE |
| DOI: | 10.12681/eadd/35247 |
|---|