Temat: marine simulation - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Comparison of the Calculated Wind Loads to the Power Generated by the Main Propulsion and Thrusters of the Ship with the Results of Simulation Tests
Autorzy:: Formela, K.
Tematy:: marine simulation
port maneuvers
ship's movement
main propulsion
thruster
simulation tests
Port of Gdynia
wind loads; Pokaż więcej
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Powiązania:: https://bibliotekanauki.pl/articles/116285.pdf Link otwiera się w nowym oknie
Opis:: One of the main factors affecting the safe port maneuvers by ships is wind, which directly affects the ship's movement. The article presents a comparison of calculated wind loads to the power generated by thrusters and the main propulsion of the ship with the results of simulation tests in order to determine the safe wind force limits allowing safe port maneuvers with a particular ship model.
Dostawca treści:: Biblioteka Nauki

Artykuł

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Skocz do pozycji: 2.

Tytuł:: A simulation method to determine the safe operating conditions for designed sea-going ferries
Autorzy:: Gucma, S.
Artyszuk, J.
Gralak, R.
Kowalski, A.
Tematy:: conditions of safe operation of ferries
simulation of ferry manoeuvring
design of marine ferries
safety of navigation
marine simulation; Pokaż więcej
Wydawca:: Akademia Morska w Szczecinie. Wydawnictwo AMSz
Powiązania:: https://bibliotekanauki.pl/articles/135428.pdf Link otwiera się w nowym oknie
Opis:: The presented method for defining the conditions of safe operation of marine ferries in ferry terminals allows verification of shipowner ferry designs. In the first stage of this method, simulations are used to determine the allowable wind speed. The second stage comprises simulations of ferry berthing aimed at defining safe manoeuvring areas, the energy of berthing impact and propeller stream speeds at allowable wind speeds. The method was used in the design of a 228 m long hybrid ferry.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Verification of the accuracy requirements for relative course and closest point of approach
Autorzy:: Juszkiewicz, W.
Tematy:: radar systems
IMO performance standards
target tracking
safety of navigation
risk assessment
marine simulation; Pokaż więcej
Wydawca:: Akademia Morska w Szczecinie. Wydawnictwo AMSz
Powiązania:: https://bibliotekanauki.pl/articles/135158.pdf Link otwiera się w nowym oknie
Opis:: Closest point of approach (CPA) is a basic factor taken into consideration for risk assessment during the meeting of two ships at sea. Navigators should use radars with automatic target tracking for collision avoidance and should know the accuracy to which radar data are calculated. Basic information about these requirements can be found in IMO resolutions. The currently binding document for devices manufactured after 2008 is IMO Resolution MSC.192(79). But there are two independent requirements for relative motion. One of these refers to relative motion parameters (relative course and speed) and the other one to the value that is the result of this motion (CPA). The other important document is Standard 62388. This specifies the minimum operational and performance requirements, methods of testing and the required test results published by IEC and also refers to radar equipment. However, this standard is not so popular in different publications focusing on radar equipment, so these requirements were not analyzed in the article. The main problem described in this paper refers to the mutual consistency of IMO Resolution requirements. The results of simulations and their analysis are presented.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Procedure for Marine Traffic Simulation with AIS Data
Autorzy:: Miyake, R.
Fukuto, J.
Hasegawa, K.
Tematy:: AIS Data
Marine Traffic
Marine Traffic Simulation
Collision Avoidance
Automatic Identification System (AIS)
safety at sea
Traffic Simulation
Navigation Environment; Pokaż więcej
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Powiązania:: https://bibliotekanauki.pl/articles/117537.pdf Link otwiera się w nowym oknie
Opis:: It is essential to evaluate safety of marine traffic for the improvement of efficiency and safety of marine traffic. Spread of AIS makes observation of actual marine traffic more easily and faster than before. Besides, description of collision avoidance behaviours of ships are indispensable to simulate a realistic marine traffic. It is important to develop and implement an algorithm of collision avoidance corresponding to a target traffic or target area into the marine traffic simulation because actual actions for collision avoidance depend on circumstances where ships are sailing. The authors developed an automated marine traffic simulation system with AIS data. And in this paper, we proposed a series of systematic procedures for marine traffic simulation including analysing for collision avoidance behaviours using AIS data.
Dostawca treści:: Biblioteka Nauki

Artykuł

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Skocz do pozycji: 5.

Tytuł:: Evaluation of near-collisions in the Tagus River Estuary using a marine traffic simulation model
Autorzy:: Rong, H.
Teixeira, A.
Soares, C. G.
Tematy:: near-collisions
ship domain
marine traffic simulation
artificial potential field
AIS data
maritime safety; Pokaż więcej
Wydawca:: Akademia Morska w Szczecinie. Wydawnictwo AMSz
Powiązania:: https://bibliotekanauki.pl/articles/135293.pdf Link otwiera się w nowym oknie
Opis:: This paper evaluates near ship-ship collision situations in the Tagus River Estuary using a simulation model of ship navigation in restricted waters. The simulation model consists of a ship collision avoidance model based on the Artificial Potential Field (APF) method, which has been improved to account for the lateral distribution of traffic along the route, the ship type and length and speed development of the ships along the trajectory. AIS data of ships entering and leaving the port of Lisbon are analysed to obtain the main characteristics of traffic parameters used as input for the traffic simulation model, such as: the routes of the vessels, speed distribution along the routes, traffic density and characteristics of the ships in each route, among others. First, the improved model of ship navigation and the Monte Carlo simulation technique are used to simulate the marine traffic in the Tagus River Estuary. Then, the concept of “ship domain” is used as collision criterion to determine the number of near collisions and the locations where they are most likely to occur. Finally, the simulation results are compared to the ones obtained from raw AIS data to assess the capability of the simulation model for marine traffic risk analysis.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 6.

Tytuł:: Methods of computer simulation in waterway system design
Autorzy:: Gucma, S.
Tematy:: marine traffic engineering
computer simulation
waterways design; Pokaż więcej
Wydawca:: Akademia Morska w Szczecinie. Wydawnictwo AMSz
Powiązania:: https://bibliotekanauki.pl/articles/359030.pdf Link otwiera się w nowym oknie
Opis:: This article presents basic principles of using simulation research in marine traffic engineering and describes a simulation method of waterway design. The author indicates the most common errors made when the procedures of simulation research are not followed, despite advanced ship handling simulators used, which makes it impossible to satisfy the criterion of conformity between the examined system and its model. Practical use of results thus obtained leads to the breach of safety criteria or overdimensioning of waterway system. The presented simulation method of waterway design has been developed by this author. Applying the procedures of the method ensures that the mentioned conformity criterion is fulfilled.
Dostawca treści:: Biblioteka Nauki

Artykuł

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Skocz do pozycji: 7.

Tytuł:: Vessel-fender contact force modelling for a real-time ship manoeuvring simulator
Autorzy:: Moreno, F. M.
Sasaki, H. A. U.
Makiyama, H. S.
Tannuri, E. A.
Tematy:: maritime safety
hydrodynamic forces
marine transportation
modelling of maritime operations
ship manoeuvring simulation
real time simulation
deck operations
marine simulators; Pokaż więcej
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Powiązania:: https://bibliotekanauki.pl/articles/59123380.pdf Link otwiera się w nowym oknie
Opis:: This paper presents the development of a method for calculating the horizontal contact forces between two bodies in a real-time ship manoeuvring simulator. The method was implemented in the simulator of the University of São Paulo, whose computing core is named “Dyna”. The model proposed calculates restoration and friction forces between bodies and has a Momentum-Impulse based criterion to reduce numerical issues when the simulation numerical integration has large time-steps. The model was empirically evaluated at the simulator by deck officers, in real-time simulations with pilots and tugmasters. We also ran simulations of that model to compare its performance under different integration time-steps lengths.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Simulation Model on Determining of Port Capacity and Queue Size: A Case Study for BOTAS Ceyhan Marine Terminal
Autorzy:: Uğurlu, O.
Yüksekyıldız, E.
Köse, E.
Tematy:: Simulation Model
port capacity
Queue Size
Marine Terminal; Pokaż więcej
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Powiązania:: https://bibliotekanauki.pl/articles/116125.pdf Link otwiera się w nowym oknie
Opis:: Simulation programs are a useful and effective tool for analysis of projects requiring high investment costs, studies to improve the functioning of an existing system, and the analysis of the effectiveness and efficiency. They make it possible to control of system or substructure by less investment cost. Simulation models are often used in port modeling, capacity analysis, queue size and port efficiency. In this study, simulation model of loading terminals of the BOTA? Ceyhan pipeline were done. For this reason, AWESIM simulation program was used. This modeling evaluated for 365 days and each ship has approached the port with intervals of 12-24, 12-36, 24-36 and 24-48 hours. Stormy days in a year have been assumed as 30. Each ship demands trailer and pilotage service when approaching and leaving the port. In this simulation model; ship types, capacities, coming frequencies, loading times, maneuvering time and transportation capacity of BOTA? Ceyhan Marine Terminal were investigated.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 9.

Tytuł:: Simulation of the combustion process in the electronically controlled marine diesel engine
Autorzy:: Kluj, S.
Tematy:: marine diesel engines
simulation
combustion engines
electronically controlled engines; Pokaż więcej
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Powiązania:: https://bibliotekanauki.pl/articles/243056.pdf Link otwiera się w nowym oknie
Opis:: The introduction of the electronically controlled low-speed diesel engines has raised a number of new problems - caused mainly by the influence of these electronic system settings on the combustion process. The wide set of the combustion press settings is now available for the chief engineers on the board of the ship and for the shipyard experts during the sea trials. This opens many new possibilities for the combustion process optimization but also causes the danger of the serious engine malfunction due to the improper settings. The paper presents the mathematical model of the electronically controlled low-speed marine diesel engine ant the special attention is paid to the available settings of the combustion process. The effective compression ratio, the injection timing and the exhaust valve setting can be adjusted in a similar manner like in the actual engine. The combustion pressure curves, the mean indicated pressure, the exhaust gas temperature can be observed when changing the combustion settings. The paper describes in detail the results of the several most typical simulations like change of the given combustion pressure increase, the change of the effective compression ratio, the change of the exhaust valve opening timing and the change of the maximum load setting.
Dostawca treści:: Biblioteka Nauki

Artykuł

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Skocz do pozycji: 10.

Tytuł:: Avoiding collisions, enhancing marine safety – a simplified model for the Aegean Sea
Autorzy:: Ventikos, N. P.
Rakas, D. K.
Tematy:: marine safety
collision
modeling
maritime traffic
traffic simulation
Aegean Sea; Pokaż więcej
Wydawca:: Akademia Morska w Szczecinie. Wydawnictwo AMSz
Powiązania:: https://bibliotekanauki.pl/articles/135454.pdf Link otwiera się w nowym oknie
Opis:: Ship collision is a hazardous event within the chain of maritime transport. Collisions may result in human losses, adverse economic consequences, and environmental damages causing significant impact to local societies and related activities. A major factor in any risk analysis concerning ship collisions is the probability of these collisions occurring. The purpose of this study is to assess the probability of ship-to-ship collision in the Aegean Sea. The basic concept of the developed model is to (statistically) simulate traffic flow in the area of interest and determine the collision candidates; this will be implemented in a pilot study in a segment of the Aegean Sea. The input of this effort is based on values that are extracted from statistical analysis of the international fleet in combination with the study of maps depicting traffic flow in the studied area. Hence, it does not employ detailed AIS data. The obtained results are presented and their agreement with actual incidents is discussed in depth. The paper concludes with interesting insights of the aforementioned tasks.
Dostawca treści:: Biblioteka Nauki

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