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Influence of drift angle on the computation of hull–propeller-rudder interaction

Influence of drift angle on the computation of hull–propeller-rudder interaction
Influence of drift angle on the computation of hull–propeller-rudder interaction
The operation of the propeller dominates the flow interaction effects on the upstream hull and a downstream rudder. An investigation is carried out into the sensitivity with which these effects can be resolved when an angle of drift is applied as well as the length of an upstream body is varied. The computed results are compared to a detailed wind tunnel investigation which measured changes in propeller thrust, torque and rudder forces. Variation of the upstream body length and drift angle effectively varies the magnitude of the crossflow and wake at the propeller plane. The time resolved flow was computed around the hull-propeller–rudder configuration using the Reynolds averaged Navier Stokes (RANS) equations and an Arbitrary Mesh Interface (AMI) model to account for the motion of the propeller. A mesh sensitivity study quantifies the necessary number of mesh cells to adequately resolve the flow field. Overall, good agreement is found between the experimental and computational results when predicting the change in propulsive efficiency, flow straightening and rudder manoeuvring performance. However, it can be seen that there is a significant computational expense associated with a time resolved propeller interaction and that alternative body force based methods are likely to still be required with the computation of self-propelled ship manoeuvres.
hull–propeller–rudder interaction, drift angle, maritime CFD, manoeuvring, flow straightening
0029-8018
64-77
Badoe, Charles
b0d47aa4-aa66-4621-86dd-d0c7e2bdf3b5
Phillips, Alexander B.
f565b1da-6881-4e2a-8729-c082b869028f
Turnock, S.R.
d6442f5c-d9af-4fdb-8406-7c79a92b26ce
Badoe, Charles
b0d47aa4-aa66-4621-86dd-d0c7e2bdf3b5
Phillips, Alexander B.
f565b1da-6881-4e2a-8729-c082b869028f
Turnock, S.R.
d6442f5c-d9af-4fdb-8406-7c79a92b26ce

Badoe, Charles, Phillips, Alexander B. and Turnock, S.R. (2015) Influence of drift angle on the computation of hull–propeller-rudder interaction. Ocean Engineering, 103, 64-77. (doi:10.1016/j.oceaneng.2015.04.059).

Record type: Article

Abstract

The operation of the propeller dominates the flow interaction effects on the upstream hull and a downstream rudder. An investigation is carried out into the sensitivity with which these effects can be resolved when an angle of drift is applied as well as the length of an upstream body is varied. The computed results are compared to a detailed wind tunnel investigation which measured changes in propeller thrust, torque and rudder forces. Variation of the upstream body length and drift angle effectively varies the magnitude of the crossflow and wake at the propeller plane. The time resolved flow was computed around the hull-propeller–rudder configuration using the Reynolds averaged Navier Stokes (RANS) equations and an Arbitrary Mesh Interface (AMI) model to account for the motion of the propeller. A mesh sensitivity study quantifies the necessary number of mesh cells to adequately resolve the flow field. Overall, good agreement is found between the experimental and computational results when predicting the change in propulsive efficiency, flow straightening and rudder manoeuvring performance. However, it can be seen that there is a significant computational expense associated with a time resolved propeller interaction and that alternative body force based methods are likely to still be required with the computation of self-propelled ship manoeuvres.

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More information

Accepted/In Press date: 27 April 2015
Published date: 15 July 2015
Keywords: hull–propeller–rudder interaction, drift angle, maritime CFD, manoeuvring, flow straightening
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 370400
URI: https://eprints.soton.ac.uk/id/eprint/370400
ISSN: 0029-8018
PURE UUID: 4af4f111-ba77-4c2f-956d-c03f6e2af1e9
ORCID for S.R. Turnock: ORCID iD orcid.org/0000-0001-6288-0400

Catalogue record

Date deposited: 29 Oct 2014 12:13
Last modified: 06 Jun 2018 13:14

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