Department of Maritime Simulation Jarosław Artyszuk
Title: Applying simulation studies to define further development of the approach channel to Ystad
Author/Authors: Lucjan Gucma, Rafał Gralak, Jarosław Artyszuk, Renata Boć
Place of publication: Zeszyty Naukowe Akademii Morskiej w Szczecinie, vol.54(126)2018, pp.103-109
Year: 2018
Keywords: navigation safety, port and waterway design, ship manoeuvring simulation, Ystad ferry port
Abstract: The increasing sizes of ships determine the interest in modifying the already existing solutions. Simulation models allow us to analyse the possible modernisation options. The article presents analysis results for the width of the fairway to Ystad, marked with buoys with respect to navigation safety. After a thorough analysis, taking into
account the safety of navigation, further possibilities of development have been determined. Study results are aimed at designing new solutions in case of modernization of the approach channel to Ystad.
Website address (link) to the full text of the publication: http://repository.scientific-journals.eu/handle/123456789/2474
Title: A simulation method to determine the safe operating conditions for designed sea-going ferries
Author/Authors: Stanisław Gucma, Jarosław Artyszuk, Rafał Gralak, Adam Kowalski
Place of publication: Zeszyty Naukowe Akademii Morskiej w Szczecinie, vol.53(125)2018, pp. 114-122
Year: 2018
Keywords: ferry manoeuvring safety in port, safe operational conditions, ferry design requirements, simulation study
Abstract: 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.
Website address (link) to the full text of the publication: http://repository.scientific-journals.eu/handle/123456789/2454
Title: A study on the identification of the second-order linear Nomoto model from the zigzag test
Author/Authors: Jarosław Artyszuk
Place of publication: Zeszyty Naukowe Akademii Morskiej w Szczecinie, vol.53(125)2018, pp. 59-67
Year: 2018
Keywords: ship manoeuvring and steering, Nomoto second-order linear model, model identification, zigzag test
Abstract: In this paper a simple four-point, in terms of time, but eight-value in total, identification method has been
developed for the second-order linear Nomoto steering model. The algorithm intrinsically uses the zigzag test data in that it inherited some principles of the well-known procedure for the first-order model, from which it is essentially derived. The performance evaluation was then conducted with both simulated and real data. However, the results of these early, unprecedented efforts are far from satisfactory. Some potential sources of difficulties have been discussed.
This calls for further research and improvement in order to provide a practical application of the method.
Website address (link) to the full text of the publication: http://repository.scientific-journals.eu/handle/123456789/2461
Title: Conversion of a second- to first-order linear Nomoto model in the light of zigzag manoeuvre performance
Author/Authors: Jarosław Artyszuk
Place of publication: Annual of Navigation, vol.25/2018, pp. 187-203
Year: 2018
Keywords: zigzag test, ship manoeuvring and steering, Nomoto first- vs. second-order linear model, order reduction problem
Abstract: The problem of considerable difference between the first- and second-order linear Nomoto models is undertaken, not well covered in literature so far. If the former approximates the latter (better one, of a sound hydrodynamic interpretation) for some reasons, its parameters can not be easily derived from the other one, except for some specific rare cases. For such an identification purpose, we can use a simulated zigzag response and the classic procedure proposed by Nomoto in 1960. However, the first-order model thus developed yields somehow redefined constants against the original model, which lose their normal hydrodynamic (or kinematic) sense. In other words, it is very sensitive to the manoeuvre type on input, being therein the zigzag test. Therefore, the model is allowed to be only used for simulating motions essentially similar to the input zigzag. In other words, the identification procedure works like a blind curve-fitting and
the first-order model (in contrast to second-order one) is inadequate for reflecting arbitrary manoeuvres, even for mild rudder as to be within ‘linear’ assumptions. This study examines systematically and in detail such an incompatibility of the first order model in that it presents the conversion charts from the standpoint of 10°/10° zigzag test matching. One can receive higher or lower values for the parameters of first-order model, versus the second-order one, depending on the T3/T2 ratio of the latter model.
Website address (link) to the full text of the publication: Annual of Navigation
Title: System for determining dynamic under keel clearance of vessels entering the Port of Świnoujście (DRWPS)
Author/Authors: Lucjan Gucma, Mateusz Bilewski, Jarosław Artyszuk, Kinga Drwięga
Place of publication: TransNav - The International Journal on Marine Navigation and Safety of Sea Transportation
Year: 2017
Keywords: port manoeuvering, under keel clearance (UKC), Port of Swinoujscie, Response Amplitude Operator (RAO), UK Reduction, graphical user interface, Liquefied Natural Gas (LNG), LNG Vessels
Abstract: The article presents a system for determining dynamic under keel clearance. In order to build a DRWPS system, a mixed model was created based on the analysis of math models. The system includes advisory software for defining the conditions for the entering of large LNG vessels in the context of under keel clearance and software was built
to support the decision-making of operators who are responsible for introducing these vessels to the Port of Swinoujscie.
Website address (link) to the full text of the publication: pełny tekst
Author/Authors of Chapter: Performance of Second-order Linear Nomoto Model in terms of ZigZag Curve
Parameters, str. 403-409.
Title of monograph: Marine Navigation. Marine Navigation and Safety of Sea Transportation
Author/Authors: Jarosław Artyszuk
Place of publication: Taylor & Francis Group
Year: 2017
Keywords: ship manoeuvring, steering, Nomoto model
Abstract: The second-order linear model of ship yaw motion, against the well-known first-order approximation, is
hydrodynamically sound and therefore more important for many reasons. The zigzag (Kempf) test is one of standard benchmark manoeuvres to evaluate ship designs and provide informative comprehensive data for identifying motion
mathematical models. This study produces and analyses universal charts of systematic interdependence between the second-order model parameters and the zigzag curve parameters. An essentially wide range of model parameters is concerned. This can enable a unique identification of the second-order linear model from the ship zigzag behaviour. For that purpose, some practical guidelines are also developed.
ISBN 978-1-138-29762-3
Title: Optimization of waterway bend widths using computer simulation methods of ship movement
Author/Authors: Jarosław Artyszuk, Rafał Gralak, Maciej Gucma, Stanisław Gucma, Wojciech Ślączka, Paweł Zalewski
Place of publication: Zeszyty Naukowe Akademii Morskiej w Szczecinie, vol.46(118)2016, pp. 115-121
Year: 2016
Keywords: computer simulation of vessel traffic, marine traffic engineering, waterways, bends in the fairway,
simulation methods of optimizing the parameters of waterways, Świnoujście–Szczecin fairway
Abstract: The paper presents the development of a new simulation method to optimize bends in marine waterways. This method, using results of empirical research and simulation methods, would allow accurate determination of safe manoeuvring areas. The method was used for detailed design of parameters of a waterway which is undergoing modernization to determine the optimum parameters of bend shapes in horizontal plane. The
study was conducted on the ship bridge simulator by marine pilots.
Website address (link) to the full text of the publication: http://repository.scientific-journals.eu/handle/123456789/1231
Author/Authors of Chapter 6.1:
Parametryzacja systemu podejściowych dróg wodnych metodą CIRM (Centrum Inżynierii Ruchu Morskiego), strony 147-161.
Title of monograph: Inżynieria ruchu morskiego. Wytyczne do projektowania morskich dróg wodnych i portów oraz warunków ich bezpiecznej eksploatacji
Authors/Authors: Stanisław Gucma, Jarosław Artyszuk, Mateusz Bilewski, Rafał Gralak, Lucjan Gucma, Maciej Gucma, Krzysztof Marcjan, Wojciech Ślączka, Paweł Zalewski
Place of publication: Wydawnictwo Akademii Morskiej w Szczecinie
Year: 2017
Keywords: morskie drogi wodne, wymiarowanie morskich dróg wodnych, eksploatacja statków, przepustowość dróg
wodnych, analiza ryzyka
Abstract: Inżynieria ruchu morskiego jest dyscypliną zajmującą się jakościowym i ilościowym opisem ruchu
jednostek pływających na akwenach ograniczonych w aspektach bezpieczeństwa nawigacji i efektywności żeglugi. Opracowywane metody i procedury inżynierii ruchu morskiego znalazły szerokie zastosowanie przy projektowaniu morskich dróg wodnych, portów, statków oraz warunków ich bezpiecznej eksploatacji.
Projektowanie w inżynierii ruchu morskiego utożsamiane jest z następującymi podstawowymi zadaniami:
• optymalizacja parametrów budowanych i modernizowanych systemów morskich dróg wodnych;
• określenie warunków bezpiecznej eksploatacji statków na drogach wodnych;
• optymalizacja parametrów statków przewidzianych do eksploatacji na określonych drogach wodnych. Opisane w książce metodologia i metody projektowania różnego rodzaju dróg wodnych ich systemów oraz promów morskich zostały opracowane w oparciu o odpowiednie rozwiązania stosowane w inżynierii ruchu morskiego. Metody te bazują na modelach deterministycznych i probalistycznych procesu ruchu statków, modelowaniu matematycznym i symulacji komputerowej ruchu statków na morskich drogach wodnych.
ISBN 978-83-60584-71-2
Title: The linearization of mooring load distribution problem
Author/Authors: Jarosław Artyszuk
Place of publication: Zeszyty Naukowe Akademii Morskiej w Szczecinie, vol.46(118)2016, pp. 9-16
Year: 2016
Keywords: ship mooring, mooring line loads, load pattern (distribution), linear model, analytical vs. numerical approach
Abstract: This paper presents a novel step forward in finding the loads of particular mooring ropes that balance the
steady environmental excitations for a ship staying at berth. The industrial static equilibrium method for a rough assessment of ship mooring safety is considered to be well-established. The static loads are directly related to the
rope’s MBLs (minimum breaking loads) while applying a certain safety margin (usually 50%). The problem is reduced to a set of linear equations that may be solved analytically. The generality in terms of arbitrary horizontal and vertical angles of mooring ropes is preserved. All derivations are provided to enhance trust in the verysimple yet absolutely accurate and fast linear solution. The accuracy is studied both analytically, throughout all the development stages, and finally by comparison to the exact numerical solution of the original nonlinear equilibrium equations for an exemplary mooring
pattern. A discussion of selected effects in load distribution is also given. Using the approach presented, for instance, we can efficiently test mooring safety when any mooring rope of the set is accidentally broken.
Website address (link) to the full text of the publication: http://repository.scientific-journals.eu/handle/123456789/1247
Title: On scaling of ship seakeeping
Author/Authors: Jarosław Artyszuk
Place of publication: Prace Naukowe Politechniki Warszawskiej. Transport, No.112, pp.
9-24
Year: 2016
Keywords: ocean waves and ship motions, linear dynamic model, dimensionless ship seakeeping,
transfer function (RAO), dimensional (similitude) analysis
Abstract: The widely accepted linear model of ship motions in waves is considered in frequency-domain, where the steady-state harmonic motions as response to harmonic waves are of interest. The solution of motion transfer functions is presented in dimensionless form with special concern about the dimensionless wave frequency as independent variable. Though some facts are known within ship model testing methodology, this detailed and careful derivation is aimed to enhance in-depth understanding of the seakeeping characteristics of a ship. It is also expected that a transfer functions data exchange between one full-scale ship and another of close geometry yet of different size will be more encouraged.
Website address (link) to the full text of the publication: On scaling of ship seakeeping | WUT Journal of Transportation Engineering (publisherspanel.com)
Title: Peculiarities of zigzag behaviour in linear models of ship yaw motion
Author/Authors: Jarosław Artyszuk
Place of publication: Annual of Navigation, No. 23, pp. 23-38
Year: 2016
Keywords: ship zigzag test (z-test), manoeuvring, steering, Nomoto linear model, model performance features
Abstract: The present survey, as part of larger project, is devoted to properties of pure linear models of yaw motion
for directionally stable ships, of the first- and second-order, sometimes referred to as the Nomoto models. In rather exhaustive way, it exactly compares and explains both models in that what is being lost in the zigzag behaviour, if
the reduction to the simpler, first-order dynamics (K-T model) is attempted with the very famous [Nomoto et al., 1957] approximation: T = T1+T2-T3. The latter three time constants of the second-order model, more physically sound,
are strictly dependent on the hydrodynamic coefficients of an essential part of the background full-mission manoeuvring model. The approximation of real ship behaviour in either of the mentioned linearity orders, and the corresponding
complex parameters may facilitate designing and evaluating ship steering, and identifying some regions of advanced nonlinear models, where linearisation is valid. As a novel outcome of the conducted investigation, a huge inadequacy of
such a first-order model for zigzag simulation is reported. If this procedure is used for determining steering quality indices, those would be of course inadequate, and the process of utilizing them (e.g. autopilot) inefficient.
Website address (link) to the full text of the publication: Annual of Navigation
Title: Inherent Properties of Ship Manoeuvring Linear Models in View of the Full-mission Model Adjustment
Author/Authors: Jarosław Artyszuk
Place of publication: TransNav - The International Journal on Marine Navigation and Safety of Sea
Transportation, Vol.10 No. 4 , pp. 595-604
Year: 2016
Keywords: ship manoevring and steering, Nomoto linear model, full-mission model, model identification
Abstract: The paper presents new results on the inherent properties of ship linear dynamics. The focus is made on the
second‐order formulation for the uncoupled equations of sway and yaw, and on their unique, unknown performance within the zigzag test. From the standpoint of application to full‐mission modeltuning, a very important loop in the drift‐yaw domain of the zigzag behaviour, as governed by the rudder rate dependent time constants (of T3‐type), is brought to the light. This and some other dependent effects, like overshoot angle performance, are likely to be lost, if the well‐known, rather ambiguous, first‐orde approximations are deployed.
Website address (link) to the full text of the publication: https://www.transnav.eu/Article_Inherent_Properties_of_Ship_Manoeuvring_Artyszuk,40,683.html