Numerical analysis of the effects of stern flaps on ship resistance and propulsion performance

Guo, Chunyu; Wang, Chao; Sun, Cong; Li, Ping; Wei, Wang

doi:10.1016/j.oceaneng.2019.106621

Cited by 26 publications

(9 citation statements)

References 17 publications

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“…As shown in Figure 9a, the overall resistance error between CFD and EFD is only 3.18%. Considering the scale effect and the error caused by the simulation model, an error below 5% is generally considered acceptable [39][40][41]. Results of trim show good consistency, the average error is 5.95%, and the maximum value error of 7.67% occurs at Fr = 0.89.…”

Section: Mesh and Domainmentioning

confidence: 97%

Influence of Flanks on Resistance Performance of High-Speed Amphibious Vehicle

Pan

Liu

2021

JMSE

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In order to reduce the additional resistance of high-speed amphibious vehicles, Flanks are designed on the concave grooves. As a new drag reduction attachment, the principle of Flanks is analyzed and discussed in detail. In this paper, the HSAV model and Flanks coupling resistance tests are performed based on the Reynolds-averaged Navier–Stokes method and SST k−ω model. The accuracy of the numerical approach is verified by a series of towing tests. Results show that with a fixed installation angle and invariable characteristic parameters, Flanks can significantly reduce the total resistance at high speed, with a maximum drag reduction of 16%. In the meantime, Flanks also affect the attitude and flow field of the vehicle, consequently affecting the resistance composition and the sailing condition. A vehicle model self-propulsion test is designed and carried out, and it qualitatively verifies the drag reduction effect of the Flanks at high speed.

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Section: Mesh and Domainmentioning

confidence: 97%

Influence of Flanks on Resistance Performance of High-Speed Amphibious Vehicle

Pan

Liu

2021

JMSE

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“…Upaya sederhana yang dinilai mampu memperbaiki performa hidrodinamika kapal patroli yaitu dengan instalasi appendages seperti stern flap (Song et al, 2019). Kombinasi antara stern flap dengan transom buritan dapat memperbaiki bidang aliran wake dengan berkurangnya ketinggian dan lembah gelombang (Klara et al, 2020), gaya drag dan hambatan gelombang dapat berkurang, hingga meminimalisir hilangnya daya (Sun et al, 2020).…”

Section: Pendahulanunclassified

Pengaruh Penambahan Variasi Geometri Stern Flap Terhadap Nilai Hambatan Pada Kapal Patroli Perikanan

Dewi¹,

Budiarto²,

Santosa³

et al. 2021

JSTM

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“…(2019) Jokar et al [65] With the help of trim tab, they controlled the instability of a boat. (2020) Song et al [66] The effect of stern flap on performance and thrust system of a vessel in a semi-displacement boat was investigated. (2019) Wang et al [67] The effect of the stern flap was examined on a catamaran in wave.…”

Section: Wedge Mounted Hullsmentioning

confidence: 99%

Experimental study of hydrodynamic performance of a Monohull Planing vessel equipped by combined transverse step and transom wedge in comparison with a model of no appendage

et al. 2020

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One of the most well-known strategies to eliminate or reduce the longitudinal instabilities in planing hull, is to reduce the trim of the craft. In the current study, porpoising is controlled through creating a transverse step, and the combination of adding a wedge to the stern and transverse step in the vessel. Usually, performance of stepped boats is not suitable in preplaning regime. However, through the proposed method, stepped model performance can be improved prior to the planing regime. The investigated craft is a 2.56 m long monohull high speed model with speed range of 1,3,5,7 and 9 m/s. The obtained results indicate that best performance is acquired by the step and wedge model at the beginning of the planing regime. From 3 to 7 m/s, drag of stepped and wedged models has the lowest value and above 7 m/s and at 9 m/s, the stepped model has the lowest resistance. Among the investigated methods, using combined step and wedge indicates largest reduction in trim angle (At speeds of 3 to 9 m/s). It can therefore be concluded that model equipped by combination of wedge and step improves the poor performance of the stepped models prior to the planing regime.

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Numerical analysis of the effects of stern flaps on ship resistance and propulsion performance

Cited by 26 publications

References 17 publications

Influence of Flanks on Resistance Performance of High-Speed Amphibious Vehicle

Influence of Flanks on Resistance Performance of High-Speed Amphibious Vehicle

Pengaruh Penambahan Variasi Geometri Stern Flap Terhadap Nilai Hambatan Pada Kapal Patroli Perikanan

Experimental study of hydrodynamic performance of a Monohull Planing vessel equipped by combined transverse step and transom wedge in comparison with a model of no appendage

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