Cavitation and 3-D LDV Tip-Flowfield Measurements of Propeller 5168

Chesnakas, Christopher J.; Jessup, Stuart D.

doi:10.21236/ada347482

Cited by 8 publications

(11 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The diameter of the propeller is 0.4027m. The 3-D LDV tip-vortex flow field measurement was conducted by Chesnakas and Jessup (Chesnakas & Jessup, 1998) in the CDNSWC 36-inch water tunnel. Four different advance coefficients were measured with detailed velocity data behind the propeller.…”

Section: Resultsmentioning

confidence: 99%

“…Computation domain was partitioned into 64 subdomains for parallel computations. The velocity measurements were performed by Chesnakas and Jessup (Chesnakas & Jessup, 1998) in the water tunnel, and is used in this work for code validation. Detailed flow conditions for the simulation cases are summarized in Table 1.…”

Section: Resultsmentioning

confidence: 99%

“…Since the condition for cavitation inception is related to the tip-vortex location, strength, convection, cavitation position on the propeller surface, and the minimum pressure location. The present study will investigate these important flow characteristics using modified preconditioning scheme, and compare the computed hydrodynamics characters of P5168 with the LDV measurement (Chesnakas & Jessup, 1998).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Preconditioned Arbitrary Mach Number Scheme Applied to Rotating Machinery

Sheng¹

2010

Computational Fluid Dynamics

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Preconditioned Arbitrary Mach Number Scheme Applied to Rotating Machinery

Sheng¹

2010

Computational Fluid Dynamics

View full text Add to dashboard Cite

“…To assess the efficacy of modified preconditioning for low Mach number rotating flows, a David Taylor marine propeller P5168 [30] was investigated. Figure 8 shows the geometry of the five-bladed, controllable-pitch marine propeller with a design advance coefficient of J = 1.27.…”

Section: Marine Propeller 5168mentioning

confidence: 99%

A Preconditioned Method for Rotating Flows at Arbitrary Mach Number

Sheng

2011

Modelling and Simulation in Engineering

View full text Add to dashboard Cite

An improved preconditioning is proposed for viscous flow computations in rotating and nonrotating frames at arbitrary Mach numbers. The key to the current method is the use of both free stream Mach number and rotating Mach number to construct a preconditioning matrix, which is applied to the compressible governing equations written in terms of primitive variables. A Fourier analysis is conducted that reveals the efficacy of the modified preconditioning. Numerical approximations for the convective and diffusive fluxes are detailed based on the preconditioned system of equations. A set of boundary conditions using characteristic variables are described for internal and external flow computations. Numerical validations are performed on four realistic viscous flows in both fixed and rotating frames. The results indicated that the modified preconditioning has a superior performance compared to the original method to predict flows from extremely low to supersonic Mach numbers.

show abstract

“…The marine propeller 5168 (P5168) is a representative propeller geometry with available detailed velocity field laser doppler velocimetry (LDV) measurements and cavitation inception measurements [1]. Data obtained from this model have been used extensively to provide validation for RANS calculations, with specific interest in predicting tip-vortex flow characteristics.…”

Section: Introductionmentioning

confidence: 99%

Computational Analysis of Marine-Propeller Performance Using Transition-Sensitive Turbulence Modeling

Xiao

Walters

2012

Journal of Fluids Engineering

View full text Add to dashboard Cite

Almost all computational fluid dynamics (CFD) simulations of flow around marine propellers use turbulence models that are only well suited for fully turbulent flows, which in some cases may lead to accuracy degradation in the prediction of propeller performance characteristics. The discrepancy between computed thrust and torque and corresponding experimental data increases with increasing propeller load. This is due in part to the fact that a large laminar flow region is found to exist and turbulence transition takes place on propeller blades of model scale and/or under high-load conditions. In these cases, it may be necessary to consider boundary-layer transition to obtain accurate results from CFD simulations. The objective of this work is to perform simulations of a marine propeller using a transition-sensitive turbulence model to better resolve the propeller flow characteristics. Fully turbulent flow simulations are also performed for comparison purposes at various propeller load conditions. Computational results are analyzed and compared with water-tunnel and open-water experimental data. It is found that the applied transition-sensitive turbulence model is better able to resolve blade-surface stresses, flow separations, and tip-vortex originations, and, consequently, improve the prediction accuracy in propeller performance, especially under high-load conditions. Furthermore, solutions obtained using the transition-sensitive turbulence model show tip-vortex flows of higher strength, whereas results by the standard k-ω SST turbulence model indicate excessive dissipation of the vortex core.

show abstract

Cavitation and 3-D LDV Tip-Flowfield Measurements of Propeller 5168

Cited by 8 publications

References 0 publications

A Preconditioned Arbitrary Mach Number Scheme Applied to Rotating Machinery

A Preconditioned Arbitrary Mach Number Scheme Applied to Rotating Machinery

A Preconditioned Method for Rotating Flows at Arbitrary Mach Number

Computational Analysis of Marine-Propeller Performance Using Transition-Sensitive Turbulence Modeling

Contact Info

Product

Resources

About