Abstract
In a joint project of the Brazilian Navy (CTMSP) and the Institute for Technological Research (IPT), the propeller of a DARPA Suboff based AUV was designed applying lifting line theory and manufactured. This paper presents the comparison of propeller tip vortex properties obtained on cavitation tunnel tests and numerical simulations, both in open water conditions. It represents an important issue in terms of propeller efficiency and acoustic investigation. The experiments were carried out at IPT’s facilities, in where thrust and torque were measured and the velocity field was registered using Particle Image Velocimetry (PIV), in order to obtain the vortex distribution pattern. The numerical approach consisted of simulating the propeller using RANS turbulence model in ANSYS® CFX and StarCCM+® finite-volume software. These simulations were performed separately by CTMSP-team and IPT-team, respectively. Numerical methods were capable of estimate the total loads and vorticity values on the tip vortex regions, however there are limitations in reproduce the vortex geometry as measured by the PIV apparatus.
| Original language | English |
|---|---|
| Title of host publication | Practical Design of Ships and Other Floating Structures |
| Subtitle of host publication | Proceedings of the 14th International Symposium, PRADS 2019, September 22-26, 2019, Yokohama, Japan- Volume I |
| Editors | Tetsuo Okada, Yasumi Kawamura, Katsuyuki Suzuki |
| Place of Publication | Cham, Switzerland |
| Publisher | Springer |
| Pages | 580-596 |
| Number of pages | 17 |
| ISBN (Electronic) | 9789811546242 |
| ISBN (Print) | 9789811546235, 9789811546259 |
| DOIs | |
| Publication status | Published - 6 Oct 2020 |
| Event | 14th International Symposium on Practical Design of Ships and Other Floating Structures, PRADS 2019 - Yokohama, Japan Duration: 22 Sept 2019 → 26 Sept 2019 |
Publication series
| Name | Lecture Notes in Civil Engineering |
|---|---|
| Volume | 63 LNCE |
| ISSN (Print) | 2366-2557 |
| ISSN (Electronic) | 2366-2565 |
Conference
| Conference | 14th International Symposium on Practical Design of Ships and Other Floating Structures, PRADS 2019 |
|---|---|
| Country/Territory | Japan |
| City | Yokohama |
| Period | 22/09/19 → 26/09/19 |
Funding
The authors would like to thank to the Diretoria de Desenvolvimento Nuclear da Marinha, the Centro Tecnol?gico da Marinha em S?o Paulo, the Centro Industrial Nuclear de Aramar and the Instituto de Pesquisas Tecnol?gicas do Estado de S?o Paulo for the support in the realization of this work.
Keywords
- AUV
- CFD
- DARPA suboff
- PIV
- tip vortex
- propellers
- ship propulsion
- ships
- turbulence modeling
- velocity imaging
- cavitation tunnel tests
- numerical methods