НИЦ "Моринтех"

ABSTRACTS

PROJECT RATIONALE OF MIDDLE RO-RO VESSELS

Borodavin D. I.
State Marine Technical University of St. Petersburg
tel.: +7 904 330 31 95
e-mail:borodavin-den@mail.ru

Highlights the decision of the internal problem of designing ro-ro vessels of medium capable. Based on the ro-ro vessels operating on the lines of the Baltic and North Seas, revealed typical dimensions of vessels. Proposed a phased scheme of design, consisting of 17 positions: Database Ro-Ro ships, the design task, the basic characteristics of the option; load of V.V. Ashiс, buoyancy, hull shape; power of main engine, propeller and main engine, cargo facilities layout; adjustment of the depth and width; sail, stability, ballasting; unsinkability, damage stability, design and strength, economy, detailing the project.

Key words: RO-RO vessel, cargo deck, design, ramps, latsport, lifts.

ON THE INFLUENCE OF SHALLOW WATER ON THE ADDED MASSES AND DAMPING COEFFICIENTS OF THE SHIP

Semenova V. Y., Than Htun Aong
State Marine Technical University of St. Petersburg
e-mail: sem_viktoria @mail.ru
tel.: (812) 776-17-46

This paper is about the three dimensional potential problem of the motions of a ship in shallow water. Numerical method is used for the solution of this problem. Special consideration is given to the investigation of the influence of shallow water on the added masses and damping coefficients. Calculations of these values are presented for different ships.

Key words: shallow water, integral equations, Green function, added masses of a ship, damping coefficients.

MEASURING INSTRUMENT OF SHIP VIBRATING LOADINGS ON THE BASIS OF THE MICROCONTROLLER

Zvyagin K. N.
State Marine Technical University of St. Petersburg
tel.: +7 931-207-51-29;      e-mail: 4250046@gmail.com
Measurement of vibrating loadings actually for ship power installations as allows to judge modes of their operation and to operate these modes.

The device providing the maximum speed and accuracy of gauging of ship vibrating loadings with possibility of viewing of results of measurements on the personal computer is developed.
Family AVR Altmega16 microcontroller was for this purpose used. The Software was created in the environment of «AVR studio 4» with application of a programming language С.
The device is tested on a series of blows and vibrating loadings. Thereby it is confirmed that it and its software work regularly.

Key words: Vibration measurement, microcontrollers, vibrating loadings.

PARAMETRICAL DESIGNING OF THE BEAM ELEMENTS OF THE SHIP HULL STRUCTURES

Zhou Ke
State Marine Technical University of St. Petersburg

The problem of parametrical designing of the beam elements of the ship hull structures is considered. Generally designing of beam elements is reduced to statement and the decision of the general task of nonlinear programming. Examples are resulted.

Key words:  parametrical designing, beam elements, common IACS Rules, nonlinear program, double-hull tanker, hull structures.

FEATURES OF DESIGN ANALYSIS OF FISHING VESSELS

Lwinn Aung Soe
State Marine Technical University of St. Petersburg
tel.: 8 960 242 36 59
Design analysis of fishing vessels include optimization of basic elements and characteristics from the database, logical-mathematical model and the selected optimization criterion. The database allows you to create a reference version of the projected vessel and identify options for a comparative study of the project. A new way the issues of layout and navigability. Typed data on the functional structure of capacity.

Key words: design analysis, fishing vessels, optimization, system of design equation, seaworthiness.

COMPLEXITY PRINCIPLE AT MATHEMATICAL MODELING OF SEA DYNAMIC OBJECTS

Soe Min Lwin
State Marine Technical University of St. Petersburg
e-mail: soeminlwin.lwin@gmail.com

In article theoretical questions of mathematical modeling of sea dynamic objects are considered on the basis of the positions of complexity theory. The choice of a complexity principle modeling is proved. Scale and functional complexity are specified. The target space of models is defined and its decomposition on complexity is concretized. Support of demanded complexity defines a choice of dynamic object model. It is resulted mathematical descriptions of basic elements of used information spaces.

Key words: sea dynamic object, mathematical model, complex principles.

PART – LOAD MODE CHARACTERISTICS OF MARINE COMBINED CYCLE GAS – STEAM TURBINE INSTALLATION

Tikhomirov B. A., Zaw Win Htike
State Marine Technical University of St. Petersburg
e-mail: b_tikhomirov@mail.ru
tel.: (812) 495-14-32
e-mail: shwegaung@gmail.com
tel.: 8(960) 263-73-25

The program of part – load mode characteristics calculation of a marine combined cycle gas-steam turbine installation is described. The results of computer program using are presented. The principal off – design mode characteristics are generalized for installations on the base of marine 3–5 generation gas turbine engines. Part-load mode characteristics are presented for two configurations of heat recovery contour with steam turbine and warm box and with steam turbine and  deaerator.

Key words: gas turbine engine, steam turbine, combined cycle, gas – steam turbine installation, part – load mode characteristic.

OFF – DESIGN MODE CHARACTERISTICS OF MODERN MARINE GAS TURBINE ENGINES

Tikhomirov B. A., Zaw Win Htike
State Marine Technical University of St. Petersburg
e-mail: b_tikhomirov@mail.ru
e-mail: shwegaung@gmail.com

The results of computer program testing are presented. The principal off – design mode characteristics are obtained on the base of calculation of 3–5 generations marine gas turbine engines. The reasonable values of variable area power turbine stators in complex cycle gas turbine are presented to provide with effective work in the wide range of part loads under controlling of low pressure compressor.

Key words: gas turbine engine, simple and complex cycle, variable rate of work, compressor characteristics, power turbine with changing area stators.

THE DEVELOPMENT OF POWER PLANTS NATIVE ARCTIC ICEBREAKERS. DIESEL-ELECTRIC PROPULSION

Borduhenko Y. L.
Establishment of the Russian academy of sciences Institute of problems of transport after N.S. Solomenko
e-mail: yu-borduchenko@yandex.ru;
tel.: (812) 321-97-42; faks: (812) 323-29-54

Describes the development of diesel-electric power plants native Arctic line icebreakers during the second half of XX – beginning of XXI centuries. apply technical and technological achievements. The possible ways for their further development.

Key words: Arctic Class Icebreakers, Machinerys, Diesel-electric, Progress.

MAINTENANCE OF PROTECTION OF ENVIRONMENT AT RECYCLING OF THE SURFACE SHIPS AND COURTS WITH NUCLEAR REACTOR AND COURTS OF NUCLEAR TECHNOLOGICAL SERVICE

Petukhov V. V., Lyamin P. L., Ibragimov E. H.,
Aleksandrov N. I., Borduhenko Y. L.
JSC "Shipbuilding & Shiprepair Technology Center"
e-mail: v_v_petukhov@mail.ru;       tel.: (921)338-46-38

The general principles of maintenance of radiating safety Are considered at recycling of courts and the ships with nuclear reactor and courts ATO. Organizational-technical schemes of recycling and technology of creation of multibarrier protection that will allow to provide necessary level of protection of the personnel, the population and environment from harmful influence of an ionising radiation are offered.
Keywords: vessels and the ships with nuclear reactor, vessels of nuclear technological service, a radioactive waste, the fulfilled nuclear fuel.

PHYSIC-MATHEMATICAL MODEL FOR INVESTIGATION OF THERMAL INSULATION INFLUENCE ON SHIP CHARACTERISTICS

Zubkov P. A.
MorNefteGazEngineering JSC
e-mail: p.zubkov@mngs-spb.com
tel.: (812) 600-90-00

Here is offered a new physic-mathematical model to investigate the influence of properties and other separate values of hull thermal insulation on ship characteristics.  The model enables to define the suitable type of thermal insulation materials within the design process. The model takes into consideration the possibility for the ships to be operated in climatic conditions of the whole World Ocean during the set service life.

Key words: thermal insulation, thermal conductivity, thickness, density, thermal flow (specific heat flow rate), heat transmission coefficient.

TWO CAVITY CLOSURE SCHEMES FOR PROBLEMS OF THE CAVITATING HYDROFOIL IN A CASCADE WITH STAGNATION ZONE IN THE SPOILER VICINITY

Uryadov A. K.
Saint-Petersburg marine technical university
e-mail: auryadov1975@mail.ru
tel.: (812) 757-19-88

The paper presents an analytical solution and corresponding numerical results for the nonlinear problem of the flow past a cavitating flat plate with stagnation zone in the spoiler vicinity operating in cascade geometry. The Tulin-Terentiev and the Efros cavity closure scheme are analysed. Chaplygin method is used for solution of the problem. It is demonstrated that the minimum of the cavitation number is found from similar problem for the Kirchhoff method. It is numerically verified that the Brillouin’s condition of smooth detachment of the stagnation zone must be satisfied.

Key words: cavitation, plate with spoiler in a cascade geometry, Brillouin’s condition, cavitation number, incidence angle.