DDES of Wetted and Cavitating Marine Propeller for CHA Underwater Noise Assessment

Viitanen, Ville; Hynninen, Antti; Sipilä, Tuomas; Siikonen, Timo

doi:10.3390/jmse6020056

Cited by 38 publications

(29 citation statements)

References 28 publications

(38 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In both cases, relative differences are below 2%. These results are comparable to values attained using more sophisticated methods [5,18]. Adoption of the ZBR model offered no significant improvements.…”

Section: Cavitation Testsupporting

confidence: 73%

Grid Type and Turbulence Model Influence on Propeller Characteristics Prediction

Sikirica

Čarija

Kranjčević

et al. 2019

JMSE

View full text Add to dashboard Cite

This paper evaluates the applicability of the hexahedral block structured grids for marine propeller performance predictions. Hydrodynamic characteristics for Potsdam Propeller Test Case (PPTC), namely thrust and torque coefficients, were determined using numerical simulations in two commercial solvers: Ansys Fluent and STAR-CCM+. Results were attained for hexahedral and tetrahedral hybrid grids equivalent in terms of cell count and quality, and compared to the experimental results. Furthermore, accuracy of Realizable k- ϵ and SST k- ω turbulent models when analyzing marine propeller performance was investigated. Finally, performance characteristics were assessed in cavitating flow conditions for a single advance ratio using Zwart–Gerber–Belamri and Schnerr and Sauer models. The resulting cavitation pattern was compared to cavity extents and shape noted during measurements. The results suggest that hexa and hybrid grids, in certain range of advance ratios, do provide similar results; however, for low and high ratios, structured grids in conjunction with Realizable k- ϵ model can achieve more accurate results.

show abstract

Section: Cavitation Testsupporting

confidence: 73%

Grid Type and Turbulence Model Influence on Propeller Characteristics Prediction

Sikirica

Čarija

Kranjčević

et al. 2019

JMSE

View full text Add to dashboard Cite

show abstract

“…The surface grid on the pressure sides of the blades is similar. A similar grid for the PPTC was used before [10,25], where the numerical simulations with the hybrid RANS/LES model showed very good agreement also with respect to the local flow LDV (laser Doppler velocimetry) measurements in the propeller wake. The grid density in the wake region was further increased for this study.…”

Section: Computational Setupmentioning

confidence: 78%

“…A pressure correction equation was derived from the continuity equation, Equation 1, linked with the linearized momentum equation. The velocity-pressure coupling is based on the corresponding algorithm for a single-phase flow [9], and is described in more detail in [10,25].…”

Section: Solution Algorithmmentioning

confidence: 99%

Cavitation on Model- and Full-Scale Marine Propellers: Steady And Transient Viscous Flow Simulations At Different Reynolds Numbers

Viitanen

Siikonen

Sánchez-Caja

2020

JMSE

Self Cite

View full text Add to dashboard Cite

In this paper, we conducted numerical simulations to investigate single and two-phase flows around marine propellers in open-water conditions at different Reynolds number regimes. The simulations were carried out using a homogeneous compressible two-phase flow model with RANS and hybrid RANS/LES turbulence modeling approaches. Transition was accounted for in the model-scale simulations by employing an LCTM transition model. In model scale, also an anisotropic RANS model was utilized. We investigated two types of marine propellers: a conventional and a tip-loaded one. We compared the results of the simulations to experimental results in terms of global propeller performance and cavitation observations. The propeller cavitation, near-blade flow phenomena, and propeller wake flow characteristics were investigated in model- and full-scale conditions. A grid and time step sensitivity studies were carried out with respect to the propeller performance and cavitation characteristics. The model-scale propeller performance and the cavitation patterns were captured well with the numerical simulations, with little difference between the utilized turbulence models. The global propeller performance and the cavitation patterns were similar between the model- and full-scale simulations. A tendency of increased cavitation extent was observed as the Reynolds number increases. At the same time, greater dissipation of the cavitating tip vortex was noted in the full-scale conditions.

show abstract

“…A finer resolution resulted in a stronger tip vortex, and therefore, earlier TVC inception. Viitanen et al [11] used a delayed detached eddy simulation and computational hydroacoustics simulations to obtain the transient characteristics 2 of 18 in the wake of a marine propeller. They pointed out that the TVC was excellently captured with the detached eddy simulation (DES).…”

Section: Introductionmentioning

confidence: 99%

A Numerical Investigation of a Winglet-Propeller Using an LES Model

Zhu

Gao

2019

JMSE

View full text Add to dashboard Cite

The generation of tip vortex cavitation (TVC) is a common phenomenon in marine propellers. Therefore, it is important to find a way for the effective suppression of TVC. Based on the enlightenment of bionics, a propeller with winglets was numerically investigated by using a large eddy simulation (LES) model and the commercial software STAR-CCM+. Various variables, such as mesh size, number of prism layers, vapor properties and time step, were analyzed using the benchmark MAU5-80 propeller. The open water characteristics calculated for the benchmark propeller were compared with experimental data. The meshes in the region of the tip vortex wake were refined. The power spectral density (PSD) of the thrust coefficient and axial velocity were investigated. The comparison of TVC between the benchmark propeller and the propeller with winglets was studied with the Q-criterion, helicity and volume fraction of the vapor. The strength of the tip vortex wake is weakened by winglets; therefore, the presence of winglets leads to a reduction in vapor volume, which in turn alleviates TVC.

show abstract

DDES of Wetted and Cavitating Marine Propeller for CHA Underwater Noise Assessment

Cited by 38 publications

References 28 publications

Grid Type and Turbulence Model Influence on Propeller Characteristics Prediction

Grid Type and Turbulence Model Influence on Propeller Characteristics Prediction

Cavitation on Model- and Full-Scale Marine Propellers: Steady And Transient Viscous Flow Simulations At Different Reynolds Numbers

A Numerical Investigation of a Winglet-Propeller Using an LES Model

Contact Info

Product

Resources

About