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Wyszukujesz frazę "dymarski, A." wg kryterium: Wszystkie pola

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Wyświetlanie 1-15 z 22
Tytuł:
Searching for critical conditions during lifeboat launching – simulations
Autorzy:
Dymarski, C.
Dymarski, P.
Kniat, A.
Powiązania:
https://bibliotekanauki.pl/articles/260445.pdf
Data publikacji:
2017
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
lifeboat launching
numerical simulations
kinematics
Opis:
The article describes numerical simulations of the process of lifeboat launching at the ship’s side. The research aimed at finding the values of ship motion parameters which appear to be most dangerous for people in the lowered lifeboat due to the generated accelerations. The simplified model of ship hull motion adopted at this research stage bases on a superposition of harmonic motions with given amplitudes and periods in six degrees of freedom. The range of the amplitude of motion for each degree of freedom corresponds approximately to that of possible motion of the PANAMAX type ship on the Baltic sea. In total, 120 960 cases of ship hull motion were examined.
Źródło:
Polish Maritime Research; 2017, S 1; 53-58
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A numerical model to simulate the motion of a lifesaving module during its launching from the ship’s stern ramp
Autorzy:
Dymarski, P.
Dymarski, C.
Powiązania:
https://bibliotekanauki.pl/articles/260530.pdf
Data publikacji:
2014
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
lifeboat
rescue boat launch
innovation
launch ramp aft
computational model for simulation
Opis:
The article presents a numerical model of object motion in six degrees of freedom (DoF) which is intended to be used to simulate 3D motion of a lifesaving module during its launching from a ship using a stern ramp in rough sea. The model, of relatively high complexity, takes into account both the motion of the ship on water in changing sea conditions, and the relative motion of the ramp with respect to the ship. The motion of the ramp changes and strongly depends on its constructional and geometrical parameters. The presented model takes into account the displacement of the submerged part of the ramp, as well as its damping in the water and the interaction with the module moving on it. The results of test simulation of a module launching from the ship in still water are included.
Źródło:
Polish Maritime Research; 2014, 2; 34-40
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Computational simulation of motion of a rescue module during its launching from ship at rough sea
Autorzy:
Dymarski, C.
Dymarski, P.
Powiązania:
https://bibliotekanauki.pl/articles/259483.pdf
Data publikacji:
2014
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
lifeboat
rescue boat launch
innovation
launch ramp aft
computational model for simulation lifeboat
computational model for simulation
Opis:
This paper is a continuation of the work titled : “A computational model for simulation of motion of rescue module during its launching from stern ramp of a ship at rough sea”. It presents results of computer simulations of motion of a rescue module with embarked persons during its launching on rollers along stern ramp of a ship at rough sea. The simulations were conducted for a selected ship fitted with a launching ramp , for a few selected scenarios of sea conditions. It was assumed that during this operation the ship drifts across direction of wave propagation.
Źródło:
Polish Maritime Research; 2014, 3; 54-60
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preliminary analysis of proposed ship docking systems for a designed floating dock
Autorzy:
Dymarski, C.
Powiązania:
https://bibliotekanauki.pl/articles/260319.pdf
Data publikacji:
2005
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
floating dock
shipboard equipment
mooring devices
Popek, A.
Opis:
In this paper are presented alternative design concepts and their comparative analysis of ship docking systems for a floating dock. The floating dock was designed by a team of Faculty of Ocean Engineering and Ship Technology, Gdańsk University of Technology, within the frame of the ECOLOGICAL DOCK E!2968 project. The presented design solutions differ to each other mainly by the kinds of applied devices: in the first case these are mooring winches and docking cars, whereas in the other – rope warping winches. For both the specified systems a comparative analysis was carried out in which their features, complexity of construction and associated costs were among other accounted for. In the opinion of the authors the presented analysis may help the principal designer of the dock in making choice of a more suitable system.
Źródło:
Polish Maritime Research; 2005, S 1; 61-64
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Vertical motions damping model test of a lifeboat lowered onto a flat sea surface
Autorzy:
Kniat, A.
Dymarski, P.
Powiązania:
https://bibliotekanauki.pl/articles/259924.pdf
Data publikacji:
2018
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
damping
dynamics
differential equations
lowering a lifeboat
numerical simulations
Opis:
The article presents the experiment’s results of the lifeboat model lowered with an initial speed and then released to fall onto a flat water surface. The purpose of the research is to determine the trajectory of the vertical boat motion and describe it with a mathematical model. This is closely related to determining the damping factor since the vertical motion is damped and the lifeboat gets balanced and stops moving after some time. The procedure of selecting parameters in the mathematical model to adjust to the results of the experiment was described in details. The summary describes the imperfections of the presented damping model and their probable causes.
Źródło:
Polish Maritime Research; 2018, S 1; 51-55
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A design concept of fire protection system for an ecological floating dock
Autorzy:
Dymarski, C.
Śledź, D.
Powiązania:
https://bibliotekanauki.pl/articles/260325.pdf
Data publikacji:
2005
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
floating dock
electric installations
fire protection systems
Opis:
This paper presents possible fire risks to an ecological floating dock and a design concept of its fire prevention system. The design concept covers: the water main fire system, froth- smothering system for fire prevention of the main deck area and CO2 – fire extinguishing system for fire prevention of engine room, workshop and cable duct of the dock.
Źródło:
Polish Maritime Research; 2005, S 1; 70-76
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Anchoring and mooring equipment for a two-segment inland waterways ship
Autorzy:
Dymarski, C.
Nakielski, J.
Powiązania:
https://bibliotekanauki.pl/articles/260467.pdf
Data publikacji:
2006
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
inland waterways ships
shipboard equipment
anchoring and mooring equipment
Opis:
This paper presents a review and analysis of anchoring and mooring equipment for contemporary inland waterways ships. Also, a design proposal of such equipment for a two-segment passenger ship as well as a list of selected components of the equipment and plan of their arrangement on the ship’s deck, is presented.
Źródło:
Polish Maritime Research; 2006, S 2; 72-75
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A design concept of main propulsion system with hydrostatic transmission gear for inland waterways ship
Autorzy:
Dymarski, C.
Skorek, G.
Powiązania:
https://bibliotekanauki.pl/articles/260451.pdf
Data publikacji:
2006
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
inland ships
hydrostatic propulsion system
Opis:
This analysis is aimed at presentation of a design concept of ship’s main propulsion system and determination of its total efficiency. To realize the task it is necessary to have a look at description of energy losses and efficiency of hydrostatic transmission gear, with taking into account its possible simplification. Image of mutual interaction of losses generated in all elements of hydraulic system appears very complex. In this paper energy balance of main propulsion system with hydrostatic transmission gear intended for a segment ship for inland waterways and coastal service, was analyzed under assumption of necessary simplifications.
Źródło:
Polish Maritime Research; 2006, S 2; 57-61
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A concept of pusher - barge coupling device of two-segment ship for inland waterways and coastal service
Autorzy:
Dymarski, C.
Rolbiecki, R.
Powiązania:
https://bibliotekanauki.pl/articles/260471.pdf
Data publikacji:
2006
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
ship devices
hydraulic drive and control
Opis:
This paper presents design assumptions and a constructional concept of the device for coupling the pusher and hotel barge of two-segment inland waterways and coastal ship. The presented device makes it possible to reach either stiff connection or mutually controlled inclination of both segments against each other, which greatly improves the ship’s manoeuvrability and thus safety of navigation especially on narrow and meandering waterways.
Źródło:
Polish Maritime Research; 2006, S 2; 76-79
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A method for the accurate numerical prediction of the tip vortices shed from hydrofoils
Autorzy:
Flaszyński, P.
Szantyr, J. A.
Dymarski, P.
Kraskowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/259231.pdf
Data publikacji:
2010
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
marine propulsors
vortex generation
numerical methods
experimental techniques
Opis:
The possibly accurate numerical prediction of the detailed structure of vortices shed from the tips of hydrofoils is an important element of the design process of marine propellers. The concentrated tip vortices are responsible for the propeller cavitation erosion and acoustic emission. The purpose of the project described in this paper was to develop the numerical method for prediction of the tip vortex structure. In the course of the project the numerical calculations were confronted with the results of experimental measurements. This led to creation of the specific method of construction of the computational grid and to selection of the optimum turbulence model. As a result the reliable method for the accurate numerical prediction of the concentrated tip vortices for different hydrofoil geometry and flow conditions has been developed and validated. This method enables elimination of the unfavourable phenomena related to the tip vortices in the course of the propeller design calculations.
Źródło:
Polish Maritime Research; 2010, 2; 10-17
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on a control system based on stepping motor for ship’s controllable pitch propellers
Autorzy:
Dymarski, C.
Powiązania:
https://bibliotekanauki.pl/articles/258652.pdf
Data publikacji:
2008
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
ship controllable pitch (CP) propellers
hydraulic drive and control
control systems
Opis:
This paper presents description of a laboratory stand for testing servo-mechanisms of ship low-power CP propellers, as well as a remote control system for such propellers, based on electric stepping motor. Also, are presented results of the first series of tests of the control system, carried out on non-loaded CP propeller by applying stepped values of propeller pitch at two values of rotational speed of the stepping motor.
Źródło:
Polish Maritime Research; 2008, 1; 37-41
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical investigations of the engine cooling system in a small power vessel pod propulsion system
Autorzy:
Dymarski, C.
Leśniewski, W.
Powiązania:
https://bibliotekanauki.pl/articles/258590.pdf
Data publikacji:
2008
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
azimuthing electric propulsion
pod propeller
heat transfer
cooling system
Opis:
The development of electronics and electrotechnology enabled to put electric motors of the alternating current in the pod and to use them for the main drive of ships. A lot of heat which must be picked up from the system is a problem which is turning up at applying the system of this type. Many big ships lately contended with these problems. Building the small propeller for the boat powered with solar power we decided to check the influence of the chilling middle on the temperature of the work of an engine. In the article we are presenting a built propeller and a way, into which an issue of the exchange of the heat was analysed using the Fluent software.
Źródło:
Polish Maritime Research; 2008, 4; 59-65
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A concept of drive and control system of a novel device for people evacuating from large passenger ships
Autorzy:
Dymarski, C.
Powiązania:
https://bibliotekanauki.pl/articles/259429.pdf
Data publikacji:
2010
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
ship deck equipment
ship evacuating systems
life saving appliances systems
hydraulic drive and control system
Opis:
Year-after-year increasing number and size of sea-going passenger ships make it necessary to search for novel methods of evacuation of passengers from such large objects or to improve those which have been applied so far. This paper presents a concept of one of the original methods, in which, a.o., chain lifts have been applied to hold up life boats during voyage as well as to launch them in case of evacuation. Technical assumptions and requirements as well as schematic diagram of the hydraulic drive and control system of the lift, is presented.
Źródło:
Polish Maritime Research; 2010, 4; 54-58
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 22

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