The flow in the stern region of a fully appended hull is analyzed by both computational and experimental fluid dynamics. The study is focused on the velocity field induced by the rotating propellers. Measurements have been performed by laser Doppler velocimetry (LDV) on the vertical midplane of the rudder and in two transversal planes behind the propeller and behind the rudder. In the numerical approach, the real geometry of the propeller has been considered. To this purpose, a dynamic overlapping grids method has been used, which is implemented in the unsteady Reynolds averaged Navier–Stokes equations (URANSE) solver developed at INSEAN. Uncertainty analysis has been performed on both data sets and the results from the two approaches are compared. The agreement between the two data sets is found to be good, the deviation in the velocity and vorticity fields lying within the evaluated uncertainties. Numerical data allowed the analysis of further details of the flow that could not be measured, like load conditions of the single blades, interaction of the propeller wake with the rudder, and pressure oscillations induced by the propeller on the vault of the stern.
Issue Section:
Flows in Complex Systems
Keywords:
blades,
computational fluid dynamics,
external flows,
flow measurement,
fluid oscillations,
Navier-Stokes equations,
numerical analysis,
propellers,
velocity measurement,
vortices,
wakes
Topics:
Blades,
Flow (Dynamics),
Hull,
Pressure,
Propellers,
Uncertainty,
Wakes,
Vorticity,
Computational fluid dynamics
References
1.
Shen
, Y. T.
, Jiang
, C. W.
, and Remmers
, K. D.
, 1997, “A Twisted Rudder for Reduced Cavitation
,” J. Ship Res.
, 41
(4
), pp. 260
–272
.2.
Felli
, M.
, Camussi
, R.
, and Guj
, G.
, 2009, “Experimental Analysis of the Flow Field Around a Propeller Rudder Configuration
,” Exp. Fluids
, 46
(1
), pp. 147
–164
.3.
Salvatore
, F.
, Streckwall
, H.
, and van Terwisga
, T.
, 2009. “Propeller Cavitation Modelling by CFD—Results from the VIRTUE 2008 Rome Workshop
,” Proceedings of the First International Symposium on Marine Propulsors (SMP’09)
.4.
Sánchez-Caja
, A.
, Rautaheimo
, P. E. S.
, and Siikonen
, T.
, 1999, “Computation of the Incompressible Viscous-Flow Around a Tractor Thruster Using a Sliding-Mesh Technique
,” Proceedings of the 7th International Conference on Numerical Ship Hydrodynamics.
5.
Blades
, E. L.
, and Marcum
, D. L.
, 2007, “A Sliding Interface Method for Unsteady Unstructured Flow Simulations
,” Int. J. Num. Methods Fluids
, 53
(3
), pp. 507
–529
.6.
Steijl
, R.
, and Barakos
, G.
, 2008, “Sliding Mesh Algorithm for CFD Analysis of Helicopter Rotor-Fuselage Aerodynamics
,” Int. J. Num. Methods Fluids
, 58
(5
), pp. 527
–549
.7.
Volkov
, E.
, 1966, “A Finite Difference Method for Finite and Infinite Regions with Piecewise Smooth Boundary
,” Sov. Math Dokl.
, 7
.8.
Volkov
, E.
, 1968, “The Method of Composite Meshes for Finite and Infinite Regions with Piecewise Smooth Boundary
,” Proc. Steklov Inst. Math.
, 96
, pp. 145
–185
.9.
Benek
, J. A.
, Steger
, J. L.
, and Dougherty
, F. C.
, 1983, “A Flexible Grid Embedding Technique with Application to the Euler Equations
,” AIAA, 6th Computational Fluid Dynamics Conference
, AIAA Paper No. 1983-1944.10.
Chesshire
, G.
, and Henshaw
, W. D.
, 1990, “Composite Overlapping Meshes for the Solution of Partial Differential Equations
,” J. Comput. Phys.
, 90
, pp. 1
–64
.11.
Meakin
, R. L.
, and Suhs
, N. E.
, 1989, “Unsteady Aerodynamic Simulation of Multiple Bodies in Relative Motion
,” AIAA, 9th Computational Fluid Dynamics Conference
, AIAA Paper No. 1989-1996.12.
Henshaw
, W. D.
, and Schwendeman
, D. W.
, 2006, “Moving Overlapping Grids with Adaptive Mesh Refinement for High-Speed Reactive and Non-Reactive Flow
,” J. Comput. Phys.
, 216
, pp. 744
–779
.13.
Carrica
, P. M.
, and Stern
, F.
, 2008, “DES Simulations of the KVLCC1 in Turn and Zigzag Manoeuvres with Moving Propeller and Rudder
,” Proc. SIMMAN 2008 Workshop on Verification and Validation of Ship Manoeuvering Simulation Methods.14.
Carrica
, P. M.
, Castro
, A. M.
, and Stern
, F.
, 2010, “Self-Propulsion Computations Using a Speed Controller and a Discretized Propeller With Dynamic Overset Grids
,” J. Mar. Sci. Technol.
, 15
(4
), pp. 316
–330
.15.
Stern
, F.
, and Agdrup
, K.
, eds., 2008, SIMMAN 2008 Workshop on Verification and Validation of Ship Manoeuvering Simulation Methods.16.
Baldwin
, B.
, and Lomax
, H.
, 1978, “Thin-Layer Approximation and Algebraic Model for Separated Turbulent Flows
,” AIAA, 16th Aerospace Sciences Meeting.
AIAA Paper No. 1978-257.17.
Lam
, C. K. G.
, and Bremhorst
, K.
, 1981, “A Modified Form of the k-Epsilon Model for Predicting Wall Turbulence
,. ASME J. Fluids Eng.
, 103
(3
), pp. 456
–460
.18.
Chang
, K. C.
, Hsieh
, W. D.
, and Chen
, C. S.
, 1995, “A Modified Low-Reynolds-Number Turbulence Model Applicable to Recirculating Flow in Pipe Expansion
,” ASME J. Fluids Eng.
, 117
, pp. 417
–423
.19.
Spalart
, P. R.
, and Allmaras
, S. R.
, 1994, “A One-Equation Turbulence Model for Aerodynamic Flows
,” Rech. Aérospat.
, 1
, pp. 5
–21
.20.
Di Mascio
, A.
, Broglia
, R.
, and Muscari
, R.
, 2008, “Numerical Simulations of Viscous Flow Around a Naval Combatant in Regular Head Waves
,” Proceedings of the 6th Osaka Colloquium on Seakeping and Stability of Ships.
21.
Di Mascio
, A.
, Broglia
, R.
, and Muscari
, R.
, 2007, “On the Application of the Single-Phase Level Set Method to Naval Hydrodynamic Flows
,” Comput. Fluids
, 36
, pp. 868
–886
.22.
Di Mascio
, A.
, Broglia
, R.
, Muscari
, R.
, and Dattola
, R.
, 2004, “Unsteady RANS Simulation of a Manoeuvring Ship Hull
,” Proceedings of the 25th Symposium on Naval Hydrodynamics.
23.
Merkle
, C. L.
, and Athavale
, M.
, 1987, “Time-Accurate Unsteady Incompressible Flow Algorithm Based on Artificially Compressibility
,” AIAA Pap.
1987, 87
–1137
.24.
Beam
, R. M.
, and Warming
, R. F.
, 1978, “An Implicit Factored Scheme for the Compressible Navier-Stokes Equations
,” AIAA J.
, 16
, pp. 393
–402
.25.
Favini
, B.
, Broglia
, R.
, and Di Mascio
, A.
, 1996, “Multi-Grid Acceleration of Second Order ENO Schemes from Low Subsonic to High Supersonic Flows
,” Int. J. Num. Methods Fluids
, 23
, pp. 589
–606
.26.
Muscari
, R.
, and Di Mascio
, A.
, 2005, “Simulation of the Flow Around Complex Hull Geometries by an Overlapping Grid Approach
,” Proceedings of the 5th Osaka Colloquium on Advanced Research on Ship Viscous Flow and Hull Form Design by EFD and CFD Approaches.
27.
Muscari
, R.
, Broglia
, R.
, and Di Mascio
, A.
, 2006, “An Overlapping Grids Approach for Moving Bodies Problems
,” Proceedings of the 16th International Offshore and Polar Engineering Conference (ISOPE 2006)
.28.
Stella
, A.
, Guj
, G.
, Di Felice
, F.
, and Elefante
, M.
, 2000, “Experimental Investigation of Propeller Wake Evolution by Means OG LDV and Flow Visualizations
,” J. Ship Res.
, 44
(3
), pp. 155
–169
.29.
Felli
, M.
, and Di Felice
, F.
, 2005, “Propeller Wake Analysis in Nonuniform Inflow by LDV Phase Sampling Techniques
,” J. Mar. Sci. Technol.
, 10
, pp. 159
–172
.30.
AIAA Standard, 1999. Assessment of Experimental Uncertainty with Application to Wind Tunnel Testing (S-071A-1999). AIAA Standards Series.
31.
Di Felice
, F.
, Di Florio
, D.
, Felli
, M.
, and Romano
, G. P.
, 2004, “Experimental Investigation of the Propeller Wake at Different Loading Conditions by Particle Image Velocimetry
,” J. Ship Res.
, 48
(2
), pp. 168
–190
.32.
Kreid
, D. K.
, 1974, “Laser-Doppler Velocimeter Measurements in Nonuniform Flow: Error Estimates
,” Appl. Opt.
, 13
(8
), pp. 1872
–1881
.33.
Buchhave
, P.
, George
, W. K.
, and Lumley
, J. L.
, 1979, “The Measurement of Turbulence with the Laser-Doppler Anemometer
,” Annu. Rev. Fluid Mech.
, 11
, pp. 443
–503
.34.
Roache
, P. J.
, 1997, “Quantification of Uncertainty in Computational Fluid Dynamics
,” Annu. Rev. Fluid Mech.
, 29
, pp. 123
–160
.35.
Jeong
, J.
, and Hussain
, F.
, 1995, “On the Identification of a Vortex
”. J. Fluid Mech.
, 285
, pp. 69
–94
.36.
Felli
, M.
, Falchi
, M.
, Pereira
, F.
, and Di Felice
, F.
, 2010, “Dynamics of the Propeller Wake Structures Interacting with a Rudder
,” Proceedings of the of 28th Symposium on Naval Hydrodynamics.
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