Browsing by Academic Department "Τμήμα Μηχανολόγων Μηχανικών"
Now showing items 1-20 of 387
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Aerodynamic study and design of an FSAE-type vehicle's front wing
(Πανεπιστήμιο Δυτικής Αττικής, 2023-10-14)The field of motorsport requires extensive study for the design of a prototype racing car, as the parameters that affect the final result are numerous and complex. In this thesis, a detailed aerodynamic and static study ... -
Approaches and design for zero-flaring in refineries
(Πανεπιστήμιο Δυτικής Αττικής, 2021-04-01)Gas flaring is the controlled high temperature oxidation process used to burn waste gases containing combustible components. It is unfortunately responsible for severe environmental and health problems and in this paper ... -
Biological flows under the effect of strong magnetic fields with micropolar theory
(Πανεπιστήμιο Δυτικής Αττικής, 2024-07-30)This doctoral thesis is focused on examining the effect of strong externally applied magnetic fields on blood flows using micropolar fluid theory. Micropolar fluid theory developed by Eringen in 1998 is an extension of the ... -
Design and manufacturing of the engine's inlet plenum and runners for an FSAE formula car
(Πανεπιστήμιο Δυτικής Αττικής, 2024-07-26)Design of the intake system for a Formula Student racing vehicle, aiming for optimal flow performance, using computational simulation methodologies (1D and/or 3D). Construction of the intake and assembly in the engine. -
Development and optimization of an inertially stabilized platform (gimbal) system for UAVs: Motion study and drivetrain
(Πανεπιστήμιο Δυτικής Αττικής, 2023-10-09)In this scholarly work, an in-depth analysis is conducted on stabilization systems utilized in Unmanned Aerial Vehicles (UAVs) and Micro Aerial Vehicles (MAVs). The primary focus is on Inertially Stabilized Platforms (ISPs) ... -
Experimental set-up for the study of thermo-fluid mechanical quantities in a car radiator
(Πανεπιστήμιο Δυτικής Αττικής, 2024-03-21)In this thesis, the construction of an experimental set – up for the study of thermo–fluid mechanical parameters in a car radiator was carried out. The experimental set – up offers the possibility for users to study any ... -
Floating Storage and Regasification Unit (FSRU) for natural gas supply
(Πανεπιστήμιο Δυτικής Αττικής, 2021-04-01)The aim of this Master thesis is the study of Floating Storage and Regasification Unit (FSRU) in order to supply Natural Gas (NG) to end users. In this context the structure of the dissertation is as follows. Chapter 1 ... -
Forecasting methods in oil & gas sector. Optimised Theta model and application on annual oil and gas demand data of european countries
(Πανεπιστήμιο Δυτικής Αττικής, 2021-10-14)In this thesis, forecasting methods in Oil&Gas industry are studied, relying on historical data. Focus is given on oil and gas yearly demand of European countries and the Theta Model is used, a time series extrapolative ... -
Hydrodynamic analysis of a marine propeller in open water conditions using the computational code OpenFoam
(Πανεπιστήμιο Δυτικής Αττικής, 2024-07-23)The constant growth of computing power the last years, has rendered the use of Computational Fluid Dynamics (CFD) extensive in the marine industry. For the purpose of meeting the greater requirements in efficient ship ... -
Hydrogen compatibility assessment in natural gas infrastructures
(Πανεπιστήμιο Δυτικής Αττικής, 2023-07-06)Man's progress during the years of his existence on Earth is remarkable. From the discovery of fire until today, technology is constantly developing and so are the needs of man. From the industrial revolution (1750-1840) ... -
Industry 4.0 - Digital transformation, ISA 95, digital twin
(Πανεπιστήμιο Δυτικής Αττικής, 2023-07-11)The fourth industrial revolution represents a significant advancement in technology, encompassing AI, robotics, IoT, 3D printing, and other innovations. These advancements are driving transformative changes across industries, ... -
Investigation of suspended particles levels inside the stations and trains of Athens Metro
(Πανεπιστήμιο Δυτικής Αττικής, 2022-07-13)In recent years, where Air Pollution issues are continuously growing and are receiving more attention from both worldwide health and political organisations, the issue of collecting data sustainably and efficiently for the ... -
Machine learning methods for predictive maintenance using real-time data and time-frequency analysis
(Πανεπιστήμιο Δυτικής Αττικής, 2023-07-18)In this diploma thesis, different techniques of Predictive Maintenance based on Machine Learning are compared. In particular, the Remaining Useful Life of a ball bearing of the shaft of a Wind Turbine was predicted with ... -
Metallographic analysis of the microstructure of a high – Mn plastic mold tool steel after heat treatment alternatives
(Πανεπιστήμιο Δυτικής Αττικής, 2023-07-27)The present thesis is about studying the heat treatment alternatives on the Uddeholm Nimax tool as far as steel microstructure and the hardness after each heat treatment is concerned. The microstructure and the chemical ... -
Modelling and quantification of uncertainty in NACA wing flows
(Πανεπιστήμιο Δυτικής Αττικής, 2024-07-23)In the field of aerospace engineering, the optimization of airfoil design plays a critical role in enhancing aircraft performance. This thesis proposes a novel algorithm for Uncertainty Quantification, which facilitates ... -
Numerical study of rarefied gas flows in micro propulsion nozzles using the stochastic DSMC method
(Πανεπιστήμιο Δυτικής Αττικής, 2024-03-22)Micro propulsion systems are a very important part of modern technology. They can be nuclear powered ones, laser-thermal, solar thermal propelled, or electric ones and all make use of a chamber along with a nozzle. ... -
Offshore αιολικά πάρκα: Παρούσα κατάσταση και προοπτικές ανάπτυξης στην Ελλάδα - Σύγκριση με ευρωπαϊκά πρότυπα
(Πανεπιστήμιο Δυτικής Αττικής, 2023-07)Τόσο η Ευρώπη όσο και η Ελλάδα επενδύουν στην αιολική ενέργεια, τόσο στη χερσαία όσο και στη υπεράκτια μορφή της. Η χερσαία αιολική ενέργεια έχει αναπτυχθεί σε πολλές περιοχές της Ευρώπης και της Ελλάδας, ενώ η υπεράκτια ... -
On topological properties of materials: Topological insulators, Weyl and Dirac semimetals
(Πανεπιστήμιο Δυτικής Αττικής, 2023-01-13)Topological materials are materials whose properties remain invariant under continuous transformations. Topological insulators are insulating in bulk and conducting at surface. In another class of topological materials, ... -
Optimizing mechanical Computer Aided Design (CAD) learning methodology through intelligent metadata management for a sustainable engineering education research field: Online, distance and hybrid learning for tutoring CAD in mechanical engineering
(Πανεπιστήμιο Δυτικής Αττικής, 2022-07-19)The author, motivated by her twenty-year experience in engineering education at different levels of the pedagogical scale, has been challenged to investigate novel processes of improving and eventually optimizing the ... -
Reducing carbon footprint in refining
(Πανεπιστήμιο Δυτικής Αττικής, 2023-07)The rising levels of greenhouse gases such as carbon dioxide can be attributed to the rapid advancement of technology as well as the growth of the refining industry. This has necessitated a procedure referred to as "carbon ...