CFD Simulations of Oscillating Hydrofoils with Cavitation

Kinzel, Michael P.; Willits, Steven M.; Lindau, Jules W.; Boger, David A.; Kunz, Robert F.; Medvitz, Richard B.; Noack, Ralph W.

doi:10.2514/6.2006-1279

Cited by 4 publications

(5 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A hydrofoil geometry used in oscillating, cavitating fin experiments (Kinzel et al, 2006) is investigated. The conditions of this case correspond to the following:…”

Section: A Noncavitating Wing Interacting With a Freesurfacementioning

confidence: 99%

“…Evaluations of oscillating hydrofoils that are cavitating are made based on experiments from Kinzel et al (2006) (Case VC3). Although the experiments use a three-dimensional fin, two-dimensional simulations are also performed to investigate the important parameters of the problem more efficiently.…”

Section: Oscillating Fin In a Water Tunnelmentioning

confidence: 99%

“…The multiphase CFD code used in this work, UNCLE-M (Lindau, 2004) has been used for a variety of flows with large scale cavitation (Kunz et al, 2006, Kunz et al, 2004, Lindau et al, 2005. The code incorporates overset gridding (Kinzel et al, 2006), through the use of SUGGAR (Noack, 2005), DiRTLib (Noack, 2006), and USURP, , which enables high resolution, high quality meshing of the free-surface configurations studied.…”

Section: Introductionmentioning

confidence: 99%

“…The code incorporates overset gridding (Kinzel et al, 2006), through the use of SUGGAR (Noack, 2005), DiRTLib (Noack, 2006), and USURP, , which enables high resolution, high quality meshing of the free-surface configurations studied.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Free-Surface Proximity Effects in Developed and Super-Cavitation

Kinzel

Lindau

Kunz

2008

2008 DoD HPCMP Users Group Conference

View full text Add to dashboard Cite

This paper summarizes a number of large-scale multiphase computation fluid dynamics (CFD) analyses of relevance to the Defense Advanced Research Projects Agency (DARPA) Underwater Express Program. The specific focus of this paper is on developed and supercavitating configurations related to submerged vehicles and control surfaces where proximity to the free-surface is relevant. The results and interpretation of several large scale simulations, enabled by adaptive and overset meshing technology, Large Eddy Simulation technology, a hybrid volume-fraction based level-set approach and high performance computing (HPC) resources, are reported.

show abstract

“…A hydrofoil geometry used in oscillating, cavitating fin experiments (Kinzel et al, 2006) is investigated. The conditions of this case correspond to the following:…”

Section: A Noncavitating Wing Interacting With a Freesurfacementioning

confidence: 99%

Section: Oscillating Fin In a Water Tunnelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Free-Surface Proximity Effects in Developed and Super-Cavitation

Kinzel

Lindau

Kunz

2008

2008 DoD HPCMP Users Group Conference

View full text Add to dashboard Cite

show abstract

“…The multiphase CFD code, UNCLE-M (Lindau, 2004), employs overset grid capabilities (Kinzel, et al, 2006) with the use of SUGGAR (Noack, 2005), DiRTLib (Noack, 2006), and USURP (Boger, et al, 2006). Structured, point-matched grids stitched together with efficient overset tools enable modeling of complex geometric features and facilitate investigations into multiple moving body problems encompassing propelled and controlled vehicle dynamics, maneuvers, cavity initiation, and vehicle stability.…”

Section: Introductionmentioning

confidence: 99%

Computational Investigations of Air Entrainment, Hysteresis, and Loading for Large-Scale, Buoyant Cavities

Kinzel

Lindau

Peltier

et al. 2007

2007 DoD High Performance Computing Modernization Program Users Group Conference

View full text Add to dashboard Cite

A complete physical model of ventilated supercavitation is not well established. Efforts documented display the ability, with a finite volume, locally homogeneous approach, to simulate supercavitating flows and obtain good agreement with experiments. Several modeling requirements appear critical, especially in physical hysteretic conditions or configurations. The hysteresis presented is due to obstruction of the flow with a solid object. The modeling approach taken correctly captures a full hysteresis loop and the corresponding dimensionless ventilation rate to cavity pressure (C Q -) relationship. This correspondence supports the suggestion that the main mechanism of cavity gas entrainment is via shear layers attached to the cavity walls. With such validated solutions, additional insight into the flow within the cavity is gained. Nomenclature C 1 , C 2 turbulence model constants C Q dimensionless ventilation rate [q/(U 0 Dc 2 )] (q is volume flow rate) C prod, C dest mass transfer model parameter L c , D c cavity length and max. diameter Fr Froude Number [U O /(Dg) 1/2 ] k, turbulence model eddy viscosity and dissipation rate L t turbulent length scale P turbulence model production term k , turbulence model Schmidt Numbers for k and k gas volume fractions p preconditioning matrix m , m ,t mixture molecular, and eddy viscosity , k mixture and isolated liquid, gas, and vapor densities cavitation index [(p -p c )/(0.5 U 2 )]

show abstract

The effect of leading-edge droop on the performance of cavitating hydrofoil in an oscillating environment

Park

Sun

Lee

2009

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

The hydrodynamics of cavitating hydrofoil in oscillating motion are important in the aspect of the performance and hydro-elasticity of the control surface of the ship. The effect of leading-edge droop is numerically studied in the oscillating hydrofoil with cavitation. A two-phase incompressible Navier—Stokes solver is used to compute the cavitation flow. The hydrodynamic performance of the baseline hydrofoil is compared with that of the fixed droop and the variable droop hydrofoil. The droop models delay the separation behind the sheet cavitation near the maximum angle of attack. When the pitch goes down, the drooped models suppress the collapse of the sheet cavitation. Therefore, they result in the improved hydrodynamic performance against the baseline model through the oscillation cycle. Among the three hydrofoils, the variable droop showed the smallest change of the lift-to-drag ratio.

show abstract

CFD Simulations of Oscillating Hydrofoils with Cavitation

Cited by 4 publications

References 7 publications

Free-Surface Proximity Effects in Developed and Super-Cavitation

Free-Surface Proximity Effects in Developed and Super-Cavitation

Computational Investigations of Air Entrainment, Hysteresis, and Loading for Large-Scale, Buoyant Cavities

The effect of leading-edge droop on the performance of cavitating hydrofoil in an oscillating environment

Contact Info

Product

Resources

About