TY - GEN

T1 - Calculation of propeller and rudder interaction using simplified propeller theory considering blade loading distribution exactly

AU - Kanemaru, Takashi

AU - Ryu, Tomohiro

AU - Yoshitake, Akira

AU - Ando, Jun

PY - 2016/1/1

Y1 - 2016/1/1

N2 - It is very important to estimate the interaction between propeller and rudder because the rudder in the propeller slipstream has the large effect on the propulsive performance. Applying the simplified propeller theory based on the infinitely bladed propeller model by Yamazaki (1968) to the propeller-rudder interaction problem is very practical. However, the accuracy of the performance prediction is not enough for the recent researches which are seeking even slightly better performance. There are two problems regarding the simplified propeller theory. One is that the propeller geometry cannot be considered exactly, the other is that the calculation model ignore the hub vortex which is important for the propeller-rudder interaction problem. This paper presents the modified simplified propeller theory in order to obtain more accurate prediction. The present model incorporates the blade circulation distribution by a panel method instead of propeller blade geometry and expresses the propeller slipstream behind the hub by regarding the hub area as a part of the blade area on the propeller plane. In this paper, the calculated rudder drag by the present method are compared with the experimental data for the validation.

AB - It is very important to estimate the interaction between propeller and rudder because the rudder in the propeller slipstream has the large effect on the propulsive performance. Applying the simplified propeller theory based on the infinitely bladed propeller model by Yamazaki (1968) to the propeller-rudder interaction problem is very practical. However, the accuracy of the performance prediction is not enough for the recent researches which are seeking even slightly better performance. There are two problems regarding the simplified propeller theory. One is that the propeller geometry cannot be considered exactly, the other is that the calculation model ignore the hub vortex which is important for the propeller-rudder interaction problem. This paper presents the modified simplified propeller theory in order to obtain more accurate prediction. The present model incorporates the blade circulation distribution by a panel method instead of propeller blade geometry and expresses the propeller slipstream behind the hub by regarding the hub area as a part of the blade area on the propeller plane. In this paper, the calculated rudder drag by the present method are compared with the experimental data for the validation.

UR - http://www.scopus.com/inward/record.url?scp=85026467708&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85026467708&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:85026467708

T3 - PRADS 2016 - Proceedings of the 13th International Symposium on PRActical Design of Ships and Other Floating Structures

BT - PRADS 2016 - Proceedings of the 13th International Symposium on PRActical Design of Ships and Other Floating Structures

A2 - Jensen, Jorgen Juncher

A2 - Nielsen, Ulrik Dam

PB - DTU Mechanical Engineering, Technical University of Denmark

T2 - 13th International Symposium on Practical Design of Ships and Other Floating Structures, PRADS 2016

Y2 - 4 September 2016 through 8 September 2016

ER -