• Journal of Ship and Ocean Technology
• /
• 제5권1호
• /
• pp.14-29
• /
• 2001

Concept and preliminary structural design methods, including large scale FEM analysis and optimisation, for large passenger ships, car passenger and RoRo/ passenger ships are dis-cussed. Applications and experiences in practical design usage are presented.

• 대한조선학회논문집
• /
• 제43권4호
• /
• pp.451-459
• /
• 2006

When a ship is damaged and flooded, the motion of the damaged ship is significantly influenced by the flooding water dynamics. The flooding water in the damaged ship has been treated as a lumped mass under the quasi-static assumption in most of previous researches. To calculate the motion of damaged ship rigorously, it is necessary to analyze the coupled dynamics of flooding water. In this study, a series of numerical and experimental studies is conducted for the damaged part of ITTC RORO passenger. FLOW3D is used for investigating the feasibility of the state of the art CFD technique. An applicability of the coupled motion analysis of damaged ships can be confirmed by agreement between the numerical results and the model experiments. A CFD technique is considered for the numerical modeling of the dynamics of flooding water.

• 한국마린엔지니어링학회:학술대회논문집
• /
• 한국마린엔지니어링학회 2006년도 전기학술대회논문집
• /
• pp.73-76
• /
• 2006

• International Journal of Naval Architecture and Ocean Engineering
• /
• 제1권1호
• /
• pp.50-56
• /
• 2009

The hydrodynamic effect of appendages for high-speed passenger vessels, such as Ro-Pax, Ro-Ro and cruiser vessels, is very severe and, therefore, it is essential to carry out the design of appendages for high-speed passenger vessels from the preliminary design stage to the final detail design stage through a full survey of the reference vessels together with sufficient technical investigation. Otherwise, many problems would be caused by mismatches between the appendages and the hull form. This paper investigates the design characteristics of some appendages, such as the side thruster, the shaft-strut, and the stern wedge, based on the design experience accumulated at Samsung, on CFD, and on model test results for high-speed passenger vessels. Further to this investigation, some practical and valuable design guidelines for such appendages are suggested.

• 한국소음진동공학회:학술대회논문집
• /
• 한국소음진동공학회 2003년도 춘계학술대회논문집
• /
• pp.738-741
• /
• 2003

In general, the essential requirement for cruisers or car ferries is the reduction in noise to ensure high quality and comfort. Recently, the Ro-Ro Passengers Ferry (ROPAX) was built in Hyundai Heavy Industries. In order to minimize the noise levels, careful attention have to De paid by the special committee of experts from the initial design stage to the sea trial. Proper countermeasures, considering the characteristics of sources and receiver spaces, were applied from the noise prediction and various experiment results. Finally, this ship was successfully delivered with excellent noise properties. This paper describes the procedure of noise analysis, the countermeasures of noise control, and the measurement results of the sea trial. Onboard noise analysis had been carried out by statistical energy analysis program and outdoor noise prediction program based on ISO9614. The prediction results are in good agreements with the measurement results. The technology to minimize the noise levels for cruisers or car ferries has been established throughout the construction of this ship.

• Journal of Advanced Marine Engineering and Technology
• /
• 제32권8호
• /
• pp.1170-1177
• /
• 2008

The purpose of this study is to measure and analyze the indoor thermal conditions in the spring of a korean coastal passenger ship which is 590-passenger Ro-Pax type built at 1997. Especially this study has focussed on the relations between the diffuser open ratio, which can be controlled by 12 steps, and the comfort. Followings are the results of this study. (1) The supply air volume to cabins are maximum 4.3 and 2 times more than design quantity when the diffusers in cabins are open 100% and 50%, respectively. (2) Regardless of diffuser open ratio, the supply air maintains constantly high temperature and below 10% of relative humidity through the experimental days. (3) All the cabins are not satisfied with the ASHRAE comfort criterion at the condition of 100% and 50% of diffuser open ratio, because of high temperature and low relative humidity. (4) At a low diffuser open ratio, number of cabins which satisfy the ASHRAE comfort criterion are increased. (5) Humidifying and dehumidifying, and hvac control system of each cabin must be reviewed and studied at the view of passengers to service more comfort environments.

• Journal of Advanced Marine Engineering and Technology
• /
• 제37권8호
• /
• pp.946-952
• /
• 2013

선박의 Ro-Ro 구역이나 특별범주구역의 화재방호를 위해 설치하는 고정식 수계소화설비의 개발 및 실용화를 위해, 특히 방수량이 적으며 관련기준에서 요구하는 성능요건을 만족하는 미분무 노즐을 개발하고자 실물화재실험을 수행하였다. 본 설비의 화재시나리오는 크게 두 가지로 트럭화물화재와 승용차화재로 구분되며, 각각 고정 설치된 미분무 노즐과 화원과의 세 가지 위치에 대한 시나리오로 이루어져 있다. 모든 화재실험은 30분간 진행되었으며 천장부의 가스온도와 우드펠릿의 손상율, 타깃합판의 착화여부로 판단되었다. 본 논문은 두 가지 화재실험 중 조건이 더욱 까다로운 트럭화재용 미분무 노즐의 결과를 위주로 방수압력과 방수량, 미분무수의 유동특성에 따른 화재실험결과와 화재진압특성을 고찰하였으며, 수십 회의 반복실험 결과 분당 약 40 L의 유량을 가지는 저압 미분무 노즐로 Ro-Ro구역의 화재진압이 가능한 것으로 나타났다.

• 한국항해항만학회지
• /
• 제44권1호
• /
• pp.1-9
• /
• 2020

본 연구는 국내 연안여객선 중 로팍스(Ro-Pax)여객선을 대상으로 거주구 실내디자인의 문제점을 파악하고 개선방안을 제시하는데 목적이 있다. 먼저 기존 연구 및 문헌 조사를 통하여 거주구 특성에 대해 고찰한 후 현재 운항하고 있는 로팍스여객선 7척에 대하여 현장 조사를 실시하였다. 현장조사를 통해 나타난 문제점을 바탕으로 여객선 전문가 38명을 대상 설문조사를 실시하였으며 그 결과 거주구 실내디자인에서 공용시설이 가장 불만족한 것으로 나타났다. 실내디자인 만족도에 미치는 영향을 검증하기 위해 다중회귀분석 결과 색채 만족도가 거주구 사용자 만족도에 가장 높은 영향을 미치는 것으로 나타났으며 거주구 실내디자인지침의 필요성이 높게 나타났다. 연구결과 공용시설의 종류 및 배치, 색채디자인 개선, 거주구 실내디자인지침 마련 등을 실내디자인 개선방안으로 제시하였다.

• 한국해양공학회지
• /
• 제33권2호
• /
• pp.196-202
• /
• 2019

In this study, the excessive noise and vibration phenomena of a high-speed Ro/Ro passenger ship were analyzed, and a countermeasure was taken based on them. This ship was granted a comfort class notation by the classification society, which was COMFORT-VIBRATION-II and COMFORT-NOISE-CREW-II. However, unfortunately, excessive noise and vibration in the aft part of the ship were delivered from the twin shaft propellers, and therefore the Class Requirement was not satisfied before delivery. In order to obtain the class notation, all of the concerned parties came to an agreement to reduce the noise and vibration level during operation after delivery because a seasonal ferry service was already scheduled and the cabin was fully booked. The root cause of the massive amount of noise and vibration was mainly the propeller-induced excitation pulse and beating that occurred from the mismatch of the rotating speeds of the two shaft lines. A 1st order vibrating force and beating phenomena existed in the propeller. Thus, a reduction of the excitation force, elimination of the beating phenomena, and decrease of the noise level at the aft area cabins and public spaces were required. In addition, structural reinforcements were conducted using pillars and additional girders at the aft part of the decks.

• 대한조선학회지
• /
• 제37권3호
• /
• pp.32-46
• /
• 2000

본고에서는 1912년 타이타닉호의 침몰사고 이후 도입된 구획 및 손상복원성규칙의 개정현황, 1987년 herald of Free Enterprise 호와 1994년 Estonia 호의 Ro-Ro Space 해수유입으로 인한 침몰사고 이후 도입된 잔존 복원력 요건 및 Ro-Ro Passenger Ship의 강화 규정을 요약하였다. 또한 IMO 혐약 내의 모든 손상복원성 류칙을 확률론적인 방법으로 통합하기 위하여 IMO SLF (복원성, 만재홀수선 및 어선안전 소위원회)에서 진행중인 HArmonization 작업과 이에 중대한 영향을 미칠 것으로 예상되는 EU(유럽연합) Consortium Project 인 "Harmonization of Rules and Design Rationale(HARDER)" 에 대한 현재까지 의 동향을 요약하였다. 그리고, 부록으로서 방화 및 구명 설비에 대한 협약개정동향을 수록하였다.동향을 수록하였다.