Abstract
In this study, scale effects on the hydrodynamic performance of DTMB 4119 propeller have been investigated in uniform flow under non-cavitating and cavitating conditions by a simple practical method based on OpenFOAM. A potential based Lifting Surface Method has also been applied. A verification study of non-cavitating simulations has been carried out by Grid Convergence Index method at one scale ratio. Then the results have been validated with experiments. Schnerr-Sauer cavitation model of OpenFOAM has been used for the phase change between vapor and liquid. Cavitation simulations have been performed as a time-dependent with dynamic mesh while non-cavitating simulations have been carried out as a steady-state with static mesh. Effects of the scale ratio and cavitation simulations have been investigated and a simple fitting procedure on the thrust and torque values based on logarithm of Reynolds number have been applied. Results have also been compared with ITTC corrections.
| Original language | English |
|---|---|
| Pages (from-to) | 166-178 |
| Number of pages | 13 |
| Journal | Ship Technology Research |
| Volume | 68 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2021 |
Bibliographical note
Publisher Copyright:© University of Duisburg-Essen 2021.
Funding
This study is a part of A. Soydan’s PhD thesis conducted out at Istanbul Technical University. He is also a YOK 100/2000 doctoral scholarship student. The authors are grateful for the use of the computing resources provided by the computing facilities at TUBITAK-ULAKBIM, High Performance and Grid Computing Center.
Keywords
- cavitation
- Computational fluid dynamics (CFD)
- marine propeller
- OpenFOAM
- RANSE
- Reynolds number
- scale effect