CFD Analysis of Rudder Bulb Fins: Optimising a Marine Application Propulsion System through the development and implementation of Rudder Bulb Fins
Translated title
CFD Analysis of Rudder Bulb Fins
Author
Cutajar, Matthew
Term
4. term
Education
Publication year
2021
Pages
56
Abstract
This project builds on prior research to develop a more robust computational fluid dynamics (CFD) model of a marine propulsion system. We examined different fin shapes and settings to understand how they affect propeller performance, focusing on the most effective fin layout. The main goal was to design fins on the rudder bulb that increase thrust and reduce energy losses. The best result came from a setup with two fins positioned to counteract the propeller's rotational inflow, improving overall system efficiency by 4.99% compared with a system without fins. Adding additional sets of fins yielded only a negligible extra gain (about 0.01%), which is not enough to justify the added cost.
Projektet bygger videre på tidligere forskning for at udvikle en mere robust CFD-model (computersimulering af væskestrømme) af et marint fremdriftssystem. Vi undersøgte forskellige former og indstillinger for finner for at se, hvordan de påvirker propellerens ydeevne, med fokus på at finde det mest effektive layout af finnerne. Hovedmålet var at designe finner på rorbulben, der kan øge trækkraften og reducere energitab. Den bedste løsning var et setup med to finner, placeret så de modvirker propellens roterende indstrømning, hvilket gav en forbedring af systemets effektivitet på 4,99 % sammenlignet med et system uden finner. At tilføje flere sæt finner gav kun en meget lille ekstra gevinst (omkring 0,01 %), hvilket ikke er tilstrækkeligt til at retfærdiggøre den ekstra omkostning.
[This apstract has been rewritten with the help of AI based on the project's original abstract]