Optimal Design Method of Dynamic Vibration Absorber to Reduce Resonant Vibration Response of Ship Local Structure

Hyuk Kwon, Daeseung Cho

Ship local structure sometimes experiences severe vibration due to the resonance with an excitation force generated by the propulsion system. In that case, the ...

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DOI: https://doi.org/10.3744/SNAK.2022.59.3.134

Computational Simulations of Turbulent Wake Behind a Pre-Swirl Duct Using a Hybrid Turbulence Model with High Fidelity

Min Jae Kang, Jae Hwan Jung, Seok Kyu Cho, Jea-Wook Hur, Sanghyeon Kim, Sang Bong Lee

A hybrid turbulence model has developed by combining a sub-grid scale model using dynamic k equation in LES with k-ωSST model of RANS equation. To ascertain pot...

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DOI: https://doi.org/10.3744/SNAK.2022.59.3.141

Study of the Open-Water Test and Analysis for a Pumpjet Propulsor in LCT

Jong-Woo Ahn, Han-Shin Seol, Hong-Seok Jung, Young-Ha Park

In order to study the open-water test and analysis techniques for pumpjet propulsors in the Large Cavitation Tunnel (LCT), at the Korea Research Institute of Sh...

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DOI: https://doi.org/10.3744/SNAK.2022.59.3.149

Study on Temperature-Dependent Mechanical Properties of Chloroprene Rubber for Finite Element Analysis of Rubber Seal in an Automatic Mooring System

Yeonhong Son, Myung-Sung Kim, Hwasup Jang, Songkil Kim, Yongjin Kim

An automatic mooring system for a ship consists of a vacuum suction pad and a mechanical part, enabling quick and safe mooring of a ship. In the development of ...

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DOI: https://doi.org/10.3744/SNAK.2022.59.3.157

A Review of HAZID/Bowtie Methodology and its Improvement

Sung-Hoon Kim

A HAZID is a brainstorming workshop to identify hazards in an early phase of a project. It should be flexible to capture all probable accidents allowing experie...

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DOI: https://doi.org/10.3744/SNAK.2022.59.3.164

Development of Ship Dynamics Model by Free-Running Model Tests and Regression

Kiwon Kim, Hoyong Kim, Sungeun Choi, Ki-In Na, Hyuk Lee, Jeonghwa Seo

The present study suggests a procedure of establishing a ship dynamics modeling by regression of free-running model test results. The hydrodynamic force and mom...

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DOI: https://doi.org/10.3744/SNAK.2022.59.3.173

Design of a Propeller Type Rim-Driven Axial-Flow Turbine for a Micro-Hydropower System

Jin-An Oh, Deok-Je Bang, Rho-Taek Jung, Su-Min Lee, Jin-Tae Lee

A design method for a propeller type rim-driven axial-flow turbine for a micro-hydropower system is presented. The turbine consists of pre-stator, impeller and ...

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DOI: https://doi.org/10.3744/SNAK.2022.59.3.183