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Researchonsimulationstudyofshipbridge
Research on simulation of ship bridge
1 Introduction
1) The purposes of simulation.By building a prototype of the selected simulation with mathematical model to have a research on simulation of engineering design of ships.It privides the basis and reference data for the design of construction engineering as well as the operation of the ship,manipulation and the decision making of management department.The following are methods of simulation and steps of including.
1)Establish simulation area and plane of digital map.
2)Select the prototype of ship and according to the establishment of a mathematical model of the simulation protptype ship.
3)Select a software about analog aontrol and process of recording analysis.
4)Simulation ship handling interface and related support software
5)Study on the determination of simulation scheme.
6)Selected suitable candidates to implement simulation program
7)Count analog results,analog results then provide analog conclusion
2) The basic equation of the equations of motion
Based on the still water of maneuvering mathematical model , join the forces merry interference in the equation of the right and establish ship motion equations:
In among,the subscript H、P、R、Wind、Current denotes the force of hull、propeller、rudder、wind and current. Therefore, in the discussion of romantic ship maneuverability, the key is to determine the airflow interference ship maneuvering force, the following will be discussed separately.
3) Wind ship maneuverability
1) Pressure force calculation
Wind force can be expressed as:
In among, is the air density. and is the relative wind speed and wind angle side. and is the orthographic and side projection area above the waterline of the ship . is the total length of the ship . 、 and is namely wind pressure coefficient x, y direction and pressure around the z-axis moment coefficients .
In the actual calculation, there is another representation of wind pressure and the moment me
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