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Study of rudder drag in propeller slipstream using segmented model rudder
Citation Link: https://doi.org/10.15480/882.9363
Publikationstyp
Conference Paper
Date Issued
2024-04-04
Sprache
English
Author(s)
Kyushu University, Faculty of Engineering, Fukuoka, Japan
Kyushu University, Faculty of Engineering, Fukuoka, Japan
Kyushu University, Faculty of Engineering, Fukuoka, Japan
TORE-DOI
Start Page
303
End Page
309
Citation
8th International Symposium on Marine Propulsors (smp 2024)
Contribution to Conference
Publisher
Norwegian University of Science and Technology, Department of Marine Technology
ISSN
2414-6129
ISBN
978-82-691120-5-4
Peer Reviewed
true
It is very important to estimate the interaction between propeller and rudder because a rudder in the propeller slipstream generates thrust. It is possible to predict the energy-saving effect by numerical methods such as theoretical calculation based on potential flow theory or CFD, qualitatively. However, the partial rudder drag just behind the boss cap is difficult to simulate since the interaction between a hub vortex and the rudder surface is very complicated. In the case of potential flow theory, the partial force on the center of the rudder can be either drag or thrust, depending on how the hub vortex is treated.
This paper focuses on the partial rudder drag in order to clear not only the total rudder drag but also how the hub vortex interacts with the rudder. Knowing these phenomena is very important to check the validity of numerical methods. The authors conducted an experiment on the interaction between propeller and rudder using the segmented model rudder. The rudder is divided into three parts, upper, center, and lower part. The experimental results show that the rudder thrust is largest at the center part. Also, the experimental results are compared to the calculated results in order to validate both of them.
This paper focuses on the partial rudder drag in order to clear not only the total rudder drag but also how the hub vortex interacts with the rudder. Knowing these phenomena is very important to check the validity of numerical methods. The authors conducted an experiment on the interaction between propeller and rudder using the segmented model rudder. The rudder is divided into three parts, upper, center, and lower part. The experimental results show that the rudder thrust is largest at the center part. Also, the experimental results are compared to the calculated results in order to validate both of them.
Subjects
Propeller-rudder interaction
Segmented model rudder
Rudder drag in slipstream
Rudder drag distribution
SQCM
DDC Class
620: Engineering
Publication version
acceptedVersion
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Name
Kanemaru-StudyOfRudderDragInPropellerSlipstreamUsingSegmentedModelRudder-1190-1-final.pdf
Type
Main Article
Size
3.88 MB
Format
Adobe PDF