The aim of the thesis is to develop a Reynolds number correction method ducted propellers. The influence of the Reynolds number is particularly complex for these, as the nozzle and propeller interact. These interactions lead to significant Reynolds number effects on model scale. In this work, the geometric variables of the nozzle and propeller are analysed together. Using CFD simulations on 2D and rotating 3D profiles as well as tests and calculations on various ducted propellers, the flow behaviour including boundary layer development at different Reynolds numbers is analysed. Model tests with propellers in two scales are used to validate the numerical calculations. Based on these results an empirical correction method for the open water characteristics of ducted propellers is developed. This takes into account boundary layer effects and geometric propeller parameters and allows the transfer of open water characteristics of model scale test results to the full-scale ducted propeller.
You can read the whole thesis in: https://doi.org/10.15480/882.15342
