Hydrodynamic performance and appendage considerations of wave-piercing planing craft overlapping waves and porpoising

Kim, Sangwon; Oshima, Nobuyuki; Lee, Sang-Eui; Lee, Gyoungwoo; Seo, Kwang-Cheol

doi:10.1299/jfst.2020jfst0013

Cited by 3 publications

(2 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Various studies have investigated the effects of trim tabs on reducing the trim angle [45][46][47][48][49][50][51] and avoiding porpoising in calm water [52][53][54][55]. These studies collectively demonstrate the significant role of trim tabs in improving hull stability and reducing motion in various water conditions.…”

Section: Trim Tabmentioning

confidence: 99%

Safety Improvements for High-Speed Planing Craft Occupants: A Systematic Review

Roshan,

Dashtimanesh,

Kujala

2024

JMSE

View full text Add to dashboard Cite

Moving fast by high-speed planing craft (HSPC) is advantageous for some special missions, though it causes severe hull vibrations and shocks that can transfer to the human body and increase health and comfort risks. This study reviews the current safety standards to avoid human safety risks affected by whole-body vibrations (WBVs), as well as the safety status of HSPC occupants. In addition, the efficiency of motion-reduction devices (trim tab and interceptor) and shock/vibration-mitigation devices (shock-mitigation seat) in improving the safety of HSPC occupants is examined according to existing documents. The research methodology was based on the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRIS-MA) method, and published papers in the Scholar, Scopus, and Web of Science databases were analyzed. Because most of these publications are academic research, issues of bias in the eligible publications were not of particular interest. During this systematic review, many gaps and challenges in current information on safety improvement devices were found that need to be addressed in future studies, such as a lack of information on motion-reduction devices and shock-mitigation seat performance in reducing lateral and fore-and-aft motions. Referring to these gaps and challenges can be valuable as a suggestion to improve current knowledge in research and reduce safety risks.

show abstract

Section: Trim Tabmentioning

confidence: 99%

Safety Improvements for High-Speed Planing Craft Occupants: A Systematic Review

Roshan,

Dashtimanesh,

Kujala

2024

JMSE

View full text Add to dashboard Cite

show abstract

“…Kim et al [25] presented the hydrodynamic characteristics of a wave-piercing planing craft through numerical simulation. Khoob and Ketabdari [26] studied wave-induced loads of wave-piercing planing trimarans.…”

Section: Introductionmentioning

confidence: 99%

Numerical Prediction of Hydrodynamic Performance of Planing Trimaran with a Wave-Piercing Bow

Shen

2020

JMSE

View full text Add to dashboard Cite

The central hull is the most important structure in the planing trimaran. In order to gain insight into the relationship between hydrodynamic performance and main hull shape, experimental tests and numerical simulations were carried out for volume Froude Number (FrΔ) ranging from 1.31 to 4.98. Dynamic sinkage and trim in the Dynamic Fluid Body Interaction (DFBI) six-degree-of-freedom model were considered. A validation study carried out by comparison of experimental test results with numerical results showed good consistency. To analyze the process of tunnel penetration and pressure change at the bottom of the boat, numerical simulation results for free surface, bottom streamline, and pressure distribution around the hull are given. A large triangular high-pressure area was observed in the front of the main hull for all volume Froude numbers. Consequently, the central drainage body, in reference to the profile of single planing craft with distinctive resistance performance, was redesigned into a wave-piercing shape. Total resistance, sinkage, and trim angle of the new model were then predicted by numerical method. The results show that the central drainage body has a significant impact on the hydrodynamic performance of the planing trimaran. Furthermore, the wave-piercing shaped main hull has a drag reduction effect.

show abstract