A coupled potential–viscous flow approach for the prediction of propeller effective wakes in oblique flow

Sánchez-Caja, Antonio; Martio, Jussi; Siikonen, Timo

doi:10.1007/s00773-018-0588-5

Cited by 5 publications

(3 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…can be found in [14,15]. The conceptual approach for the estimation of the effective wake is explained in [3,12,16]. A correction factor scheme is employed for the cancellation of the numerical errors derived from coupling a potential flow method with a RANS method (Fig.…”

Section: Methodsmentioning

confidence: 99%

“…They eliminate in an 'exact' way errors that depend linearly on the propeller induced velocities, and in an approximate way those that depend nonlinearly. For the justification of the approach and for treatment of the tangential and radial induced velocities and correction factors see [3,12].…”

Section: Correction Factorsmentioning

confidence: 99%

“…A method for the estimation of propeller effective wakes in oblique flows has been recently developed [12], which addresses several sources of coupling errors. An interface in the form of an actuator disk works as coupling surface between the potential and viscous flow solvers.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Simulation of turbulent effective wakes for propellers in off-design conditions by a correction factor approach

et al. 2021

View full text Add to dashboard Cite

This paper presents a procedure for the estimation of propeller effective wakes in oblique flows. It shows how a recently developed method for controlling coupling errors can be applied to analyze propellers operating in off-design conditions. The approach allows the use of fast potential flow methods for the representation of the propeller in the context of viscous flow solvers and works accurately for a wide range of advance numbers and incidence angles with a minimum computational cost. The new method makes it possible to disclose flow phenomena on the effective wake that were hidden in conventional approaches of effective wake simulation. Different application cases are analyzed, such as a propeller-shaft configuration in inclined flow, a pod propulsor in an oblique inflow, and a ship hull advancing at a yaw angle. A dipole-like distortion on the effective wake is unmasked for a uniform flow incident to a propeller mounted on an inclined shaft. The flow component perpendicular to the axis is found to be responsible for the distortion. The effect of the direction of propeller rotation on the effective wake is illustrated for a single-shaft ship moving at a yaw angle. In particular, keel vortices are either attracted to or repelled from the propeller disk depending on the sign of the yaw angle or alternatively on that of the propeller rotation.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Correction Factorsmentioning

confidence: 99%