Numerical simulation method for ship trim optimization
A numerical simulation and ship technology, applied in the ship field, can solve problems such as poor practicability and complicated process, and achieve the effects of simple and accurate calculation process, reduced navigation resistance and strong practicability
Pending Publication Date: 2019-08-09
ZHEJIANG OCEAN UNIV
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However, the program process is complicated and its practicability is not strong
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Embodiment 1
[0048] This embodiment provides a numerical simulation method for ship trim optimization, such as figure 1 shown, including steps:
[0049] S1. On the basis of the flat draft state, adjust the different trim states of the ship respectively;
[0050] S2. Calculate the resistance value of the ship under different trim states by using the RANS method and the cutting body automatic grid division technology;
[0051] S3. Optimally adjust the trim according to the resistance value to reduce the resistance of the ship.
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The invention discloses a numerical simulation method for ship trim optimization. The numerical simulation method comprises the steps that different trim states of a ship are adjusted on the basis ofa flat draught state; calculating resistance values of the ship in different trim states by using a RANS method and a cutting body automatic grid dividing technology; and performing trim optimizationadjustment according to the resistance value to reduce the ship resistance. According to the invention, the RANS method and the overlapping grid technology are adopted to carry out numerical simulation on the ship; according to the method, the influence of the trim adjustment on the ship resistance is explored, the optimal trim angle of the ship at the economic navigational speed is obtained, moreaccurate trim optimization adjustment of the ship is obtained, suggestions are provided for the optimal trim operation of the ship in actual operation, the ship navigational resistance is reduced through trim optimization, and energy conservation and emission reduction of the ship are achieved.
Description
technical field [0001] The invention relates to the technical field of ships, in particular to a numerical simulation method for optimization of wave trim. Background technique [0002] The principle of ship trim optimization is based on the resistance of the ship at different trim angles at the same water depth and speed, by selecting the trim condition at the time of minimum resistance, and through the ratio of ship resistance to required power, the combustion rate of required fuel is controlled . So less drag means fewer emissions and fuel-efficient operation. and. Ship trim optimization does not need to change the hull structure or install additional equipment, so not only does it not reduce the cargo capacity of the ship, it does not reduce the speed of the ship, it is easy to implement and the effect is remarkable, and it has a certain promotion prospect. In the field of ship technology, it becomes very necessary to optimize the adjustment of the trim of the ship. ...
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IPC IPC(8): G06F17/50
CPCG06F2119/06G06F30/20
Inventor 陈屹瑾艾万政
Owner ZHEJIANG OCEAN UNIV
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