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Optimization of Turbofan Engine Performance through Blade Profile Modification

This thesis reports detailed research performed to optimize the geometries of blade rows in turbofan engines through analysis with computational fluid dynamics. The study was conducted systematically by employing theoretical analysis, along with numerical computation used to evaluate the aerodynamic performance of two different blade types. The methodology consisted of the design of blade geometries in SolidWorks, mesh generation using structured and unstructured elements, and CFD simulations on ANSYS Fluent with a focus on cascade analysis. The study commenced with the development of two designs below: Blade Design 1 having a height of 1300 mm, chord length of 294 mm at the base, and 700 mm at a height of 750 mm; Blade Design 2 at a similar height, differing only in leading edge diameters and chord lengths at different cross-sections. This enables detailed meshing such that near-wall regions and critical flow features are resolved with adequate resolution. Using a pressure-based solver, the CFD simulation was performed using the k-ω SST turbulence model, which is proper for capturing near-wall effects and handling adverse pressure gradients. Inlet velocities were considered between 1 and 40 m/s, thus analyzing performance under different operating conditions.

Author: Ajiksun Kumaradhas

Supervisor: Adham Ahmed Awad Elsayed Elmenshawy

Degree: Bachelor

Year: 2024

Work Language: English

Study programme: Aviation Engineering

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Website Development for Advertisements for Rental and Sale of Real Estate

The purpose of the work is to develop a website for real estate agents and potential buyers, with the ability to publish advertisements for rental and sale of various properties. The objective of the work is to show the knowledge and skills that were acquired through the studies in the TTI (Transport and Telecommunication Institute).In this work were used the following methods:1. Analyzation of the subject area Real Estate;2. Analyzation of existing analogs;3. Design and development of data base, data access, business service, client, and server parts of the web application;4. Quality control.As the result of the work were made the web application for real estate agents and potential buyers was made, where the users can read the description, upload, modify and delete the advertisements. Was created the authentication on the website. Was created the data base of the website to store all of the information about advertisements and users.As the conclusion of the work all of the functional requirements for the website were made, full development cycle of the project was utilized and all of the errors that were raised during the work were fixed.

Author: Aleks Eglītis

Supervisor: Karina Kostjkina

Degree: Bachelor

Year: 2024

Work Language: English

Study programme: Computer Science

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Role and impact of Social Entrepreneurship in Latvia

The bachelor thesis structure consists of an introduction, three chapters, a conclusion, and a list of references, the aim of which is to determine the level of familiarity with SE (Social Entrepreneurship) that the Baltic country (Latvia) has now and compare it to the European level.The first chapter aims to explain the definition and history of Social Entrepreneurship's evolution. It provides a detailed description of how and when it started at the international level and provides more information about its formation in Latvia.The second chapter describes the social enterprises that are working and located in Latvia. This section encompasses not only the enterprises based in Latvia but also those with international recognition in Europe. It also describes the financial part.The third and last chapter is the research part, which contains research analysis: questionnaire results from 2021 and 2024 and a comparative analysis of two studies from 2021 and 2024.

Author: Aleksandra Abraite

Supervisor: Veronika Siliņeviča

Degree: Bachelor

Year: 2024

Work Language: English

Study programme: Business and Management

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Automation of the parcel distribution process in a postal department

This thesis is devoted to automating the process of parcel distribution in the post office to increase the speed and accuracy of processing in the face of the growing demand of e-commerce. The limitations of the existing manual sorting system were analyzed and an automated solution was developed. The work defines the technical parameters and functions of the system, including the operation of conveyors, accurate data collection and parcel sorting. Structural and functional diagrams are developed, and the selection of components such as scanning devices, sorting machines, conveyors, sensors and PLCs is described. The algorithm and control program for the system were created and tested using the STEP 7 development environment and FactoryIo. The proposed automated system is aimed at significantly increasing productivity and reducing errors in the parcel processing process.

Author: Aleksandrs Panteļejevs

Supervisor: Vasilijs Gredasovs

Degree: Bachelor

Year: 2024

Work Language: English

Development of a Decentralized Payment Platform Using Blockchain Technology for E-Commerce Applications

The present bachelor paper deals with a decentralized system based on smart contracts and Ethereum blockchain to facilitate payments in stable coins between customers and merchants. Defined requirements to e-commerce platform to integrate the platform, designed, implemented and tested the payment system solution based on blockchain technology.

Author: Aleksejs Korņejevs

Supervisor: Karina Kostjkina

Degree: Bachelor

Year: 2024

Work Language: Latvian

Study programme: Computer Science

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