• Title/Summary/Keyword: Ro-pax Ship

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고속 Ro-Pax선형의 조파저항성능 향상을 위한 최적 선형설계에 관한 연구 (Study for Optimal Hull Form Design of a High Speed Ro-Pax Ship on Wave-making Resistance Performance)

  • 박동우;최희종
    • 한국항해항만학회지
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    • 제36권10호
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    • pp.787-793
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    • 2012
  • 최적화기법과 선형변환 자동화기법을 도입하여 고속 중형 Ro-Pax선박의 조파저항성능을 향상시킬 수 있는 선형설계방법에 대하여 연구하였다. 최적화기법으로는 SQP(sequential quadratic programming)을 적용하였으며, 선형변환 자동화기법으로는 NURBS(Non-Uniform Rational B-Spline)기법을 적용하였다. 목적함수인 선박의 조파저항성능을 예측하기 위하여 비선형 자유수면 경계조건과 선체의 침하량을 고려한 비점성 유동 해석 기법인 패널법을 적용하였다. 기준선형에 대하여 선형최적화를 수행하였으며 그 결과로 도출된 최적선형에 대하여 모형선을 제작하여 모형시험을 수행하였다. 기준선형과 최적선형에 대한 수치해석을 수행하여 얻은 결과와 최적선형에 대한 모형시험을 수행하여 얻은 결과를 서로 비교하였다.

로팍스여객선 거주구 실내디자인 개선방안에 관한 연구 (A Study on Interior Design Improvement of the Accommodation Area in RO-PAX Ships)

  • 박진;이한석;박상욱
    • 한국항해항만학회지
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    • 제44권1호
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    • pp.1-9
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    • 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.

590인승 Ro-Pax형(型) 연안여객선의 선실 내 봄철 온열환경 측정평가 (A Measurement and Evaluation of Indoor Thermal Conditions in Spring of a Coastal Passenger Ship - 590-Passenger Ro-Pax Type)

  • 황광일;신동걸;김은수;도요한;최윤석;최정열
    • Journal of Advanced Marine Engineering and Technology
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    • 제32권8호
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    • pp.1170-1177
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    • 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.

트윈스케그 적용 대형 로팩스선의 선형개발 (Hull-Form Development of a Twin-Skeg Large Ro-Pax Ferry)

  • 이화준;장학수;홍춘범;안성목;전호환
    • 대한조선학회논문집
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    • 제49권6호
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    • pp.491-497
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    • 2012
  • A hull-form for a 32,000G/T class Ro-Pax ferry has developed in accordance with a need of ferry operators to reduce fuel oil consumption(FOC) due to the drastic increase in oil prices recently and strengthening of environmental rules and regulations such as CO2 emission. A twin-skeg type is applied as the hull-form in lieu of an open-shaft type in order to improve propulsion performance. In order to achieve this object, flow control devices are installed to reduce a propeller induced vibration which is a main reason to obstruct the application of twin-skeg type passenger vessels owing to an uncomfortable vibration level. Numerical simulation by using an in-house code and a commercial code (Fluent) has performed to find out an optimum design of the flow control devices and to check an improvement in cavity volume. Model tests in Samsung Ship Model Basin are carried out to evaluate propulsion performance with the developed twin-skeg type hull and a reference hull of open-shaft type. In conclusion, it is shown that the twin-skeg type hull is better than the open-shaft in FOC by around 7% and in cavity volume by 20% as well.

3m Ferry 모형선의 Crabbing 시험(II) (Crabbing Test of a 3m Ferry Model (II))

  • 신현경;이형락
    • 한국해양공학회:학술대회논문집
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    • 한국해양공학회 2004년도 학술대회지
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    • pp.290-297
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    • 2004
  • In this paper, one of the harbour maneuvering tests is described. Its goal is to investigate the so-called crabbing performance of ships. By crabbing is meant the ability of the vessel to move sideways with the use of her own maneuvering devices like propellers, rudders, transverse thruster, etc. the 3m ferry model is made by ocean engineering wide tank in the university of ulsan. when the model ship is leaving and going to the quay, Transverse forces and Yawing moments are measured, in the condition of zero longitudinal force and the design draught, by load cell attached to the longitudinal center of gravity on the ship. the purpose of the experiment is to verify the reliability of ocean wide tank in university of ulsan about crabbing test compared with results of foreign research institute.

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Passenger evacuation simulation considering the heeling angle change during sinking

  • Kim, Hyuncheol;Roh, Myung-Il;Han, Soonhung
    • International Journal of Naval Architecture and Ocean Engineering
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    • 제11권1호
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    • pp.329-343
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    • 2019
  • In order to simulate the evacuation simulation of a ship during a sinking, the slope angle change of the ship must be reflected during the simulation. In this study, the passenger evacuation simulation is implemented by continuously applying the heeling angle change during sinking. To reflect crowd behavior, the human density and the congestion algorithm were developed in this research and the walking speed experiment in the special situation occurring in the inclined ship was conducted. Evacuation simulation was carried out by applying the experimental results and the change of the walking speed according to the heeling angle of the ship. In order to verify the evacuation simulation, test items suggested by International Maritime Organization (IMO) and SAFEGUARD Validation Data Set conducted on a large Ro-PAX ferry (SGVDS 1) which performed real evacuation trial in full-scale ships were performed and the results of simulation were analyzed. Based on hypothetical scenario of when a normal evacuation command is delivered to the passengers of MV SEWOL in time, we predicted and analyzed the evacuation process and the number of casualties.

여객선의 Low Location Lighting에 대한 고찰 (A Study on Low Location Lighting of Passenger Ship)

  • 강기원;권지민
    • 대한조선학회 특별논문집
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    • 대한조선학회 2017년도 특별논문집
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    • pp.63-66
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    • 2017
  • All passenger ships aboard more than 36 passengers are to be able to easily find escape routes when the escape way by fire with flame spread were onboard vessel (incl. Ferry, Passenger, Ro-pax, Inland Ferry) It should be impossible by ordinary emergency lights. The international Maritime Organization (IMO) gives special requirement for luminescent evaluation onboard test procedure and applicable location of low location lighting. In order to maintain the residual light source for a certain time in the low location lighting with a strip-shaped light source, the light source material must be sufficiently exposed to the light due to the proper placement of the escape route. The lighting arrangement influence how maintain low location lighting strip luminescent which measured onboard in connection with what elements are mainly sustain luminescent.

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CPP 설계기법 연구 (An Investigation on CPP Design Technology)

  • 송인행;이태구;한재문
    • 대한조선학회 특별논문집
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    • 대한조선학회 2007년도 특별논문집
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    • pp.68-73
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    • 2007
  • CPP is widely utilized in RoPax ship, shuttle tanker etc. due to excellent manoeuvrability in low speed, and its usage is recently increased. The CPP was almost designed by CPP maker, and its performance seemed to be not fully optimized. In this study the whole CPP design procedure was reviewed and design technology of CPP was settled down including calculation of spindle torque and MOI, which was fully confirmed by KHI CPP maker. In order to confirm the CPP design technique, a CPP for shuttle tanker was designed and its performance was verified through series of model tests. The propeller efficiency and face cavitation performance of the CPP was well improved. This CPP design technology will be contributed to the optimization of performance and cooperation with CPP maker.

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