Meshing generation strategy for prediction of ship resistance using CFD approach

Yulianti, Serliana; Samuel, Sonia; Nainggolan, T S; Iqbal, Muhammad

doi:10.1088/1755-1315/1081/1/012027

Cited by 4 publications

(3 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The meshing method used was overset mesh. The overset method have a better accuracy rate than other methods (31,32). The overset mesh method required at Figure 2.…”

Section: Methodsmentioning

confidence: 91%

Numerical Investigation of Interceptor Bulb to Improve Trim Control

Yulianti,

Samuel,

Manik

et al. 2024

IJE

View full text Add to dashboard Cite

This study addresses interceptor devices to improve the hydrodynamic characteristic of autonomous unmanned surface vehicle (USV). The bulb and rectangular interceptors had molded on a planning hull. This research aims to mitigate drag impact on rectangular interceptors at high speeds. According to this study, a bulb interceptor had a better impact than a rectangular interceptor. This research is based on the finite volume method (FVM) with dynamic fluid-body interaction (DFBI), which captured the ship's dynamic trim and sinkage. The simulation used an overset mesh technique with two domains as a donor-acceptor cell. Furthermore, numerical calculations using the Reynolds-Averaged Navier-Stokes equation and the k-turbulence model predict the turbulent flow. Grid independence studies and international towing tank conference (ITTC) recommendations have been applied to ensure simulation accuracy. This study reported that the bulb interceptor had effectiveness between 9%-25% compared to the rectangular interceptor at high speed. This research showed that the bulb interceptor had better effectiveness than the rectangular interceptor.

show abstract

“…The meshing method used was overset mesh. The overset method have a better accuracy rate than other methods (31,32). The overset mesh method required at Figure 2.…”

Section: Methodsmentioning

confidence: 91%

Numerical Investigation of Interceptor Bulb to Improve Trim Control

Yulianti,

Samuel,

Manik

et al. 2024

IJE

View full text Add to dashboard Cite

show abstract

“…The automatic 125 meshing capabilities in STAR-CCM+ were used to generate meshing. The mesh used in this calculation consisted of hexahedral cells using the overset method (donor-acceptor cell method) [33].…”

Section: Computational Mesh Strategymentioning

confidence: 99%

Influence of the canal width and depth on the resistance of 750 DWT Perintis ship using CFD simulation

Hadi¹,

Tuswan²,

Azizah³

et al. 2023

brod

View full text Add to dashboard Cite

Investigation of hydrodynamic interaction between the vessel and the seabed when entering shallow water is considered one of the most critical considerations of inland waterway transport. There are many investigations into the behavior of ships in restricted waters, such as ships traveling in different forms of canal cross-sections. The present study aims to evaluate the hydrodynamic interaction of the 750 DWT Perintis Ship moving through the different canal types to determine the relative effects of limiting the width and depth cross section on the ship's resistance. Two different canals with different cross sections, including canal bank and rectangular canal, were evaluated to investigate the influence of canal width (Wb), depth ratio (hw/T), and blockage ratio function (As/Ac). The Computational Fluid Dynamic (CFD) method with Reynolds-averaged Navier–Stokes (RANS) solver and turbulent model 𝑘−𝜀 were used to predict the total resistance of the ship. The proposed numerical simulation was initially validated with an experimental towing tank test in the error range of 0.11-7.74%. The results indicated similar phenomena were found both in rectangular and canal banks. The case with a shallower (lower hw/T) and a narrower (lower Bc/Bs) canal dimension has a higher resistance value. Backflow and subsidence of free surface became significant around the ship's hull in more restricted water, changing the ship's hydrodynamic characteristics and increasing resistance. It can be found that the higher the blockage ratio (mb), the higher the total resistance value in both canal types, which proved that ships with higher speeds were more sensitive to changes in waterway restrictions.

show abstract

“…Numerical simulations using the fi nite volume method are often used to predict hydrodynamic performance on planing hull ships [15]. Until now, the FVM method has become one of the most popular methods used in numerical simulations [16]. Research shows that FVM is the most widely used choice for predicting ship planing hull performance in terms of accuracy [17].…”

Section: Introduction / Uvodmentioning

confidence: 99%

Numerical Research on the Influence of Interceptor Flaps on the Planing Hydrodynamic Performance

Samuel,

Yulianti,

Manik

et al. 2023

Naše more

View full text Add to dashboard Cite

The trim tab and interceptor have been utilized to optimize the running trim and motion control of planing boats at varying speeds in calm water. Increasing the height of the interceptor can create excessive drag and bow-down trim. The effectiveness of the interceptor can be increased by integrating it with a horizontal flap. This research focuses on the impact of the influence caused by interceptor flaps on the pressure distribution and fluid flows around the vessel. To simulate trim and sinkage measurement, the environment was modeled in the two-degree of freedom condition. Variation of integrated interceptor flaps has been analyzed with Finite Volume Method (FVM) based on RANS (Reynolds-Averaged Navier-Stokes) equation using overset mesh. The turbulent K- ε and VOF (Volume of Fluid) models are used to model the water and air phases. The grid convergence study is performed to establish the parallel solver’s grid independence. To confirm the accuracy of the test in the bare hull condition, the numerical approach was tested experimentally. The result of drag, trim, and sinkage was calculated and it has been proved that the added flaps into interceptors are very useful in drag reduction and trim control. The percentage of interceptor height is directly proportional to the resulting lift force. Higher lift force can more effectively improve trim and reduce drag. Overall, this study shows an improvement in ship performance when using an interceptor and interceptor flap. One of the model configurations in the study has been shown to reduce drag by up to 33.3% at Froude number 1.45 when compared to ships without an interceptor.

show abstract

Meshing generation strategy for prediction of ship resistance using CFD approach

Cited by 4 publications

References 20 publications

Numerical Investigation of Interceptor Bulb to Improve Trim Control

Numerical Investigation of Interceptor Bulb to Improve Trim Control

Influence of the canal width and depth on the resistance of 750 DWT Perintis ship using CFD simulation

Numerical Research on the Influence of Interceptor Flaps on the Planing Hydrodynamic Performance

Contact Info

Product

Resources

About