Method and device for evaluating and predicting ship performance
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A prediction method and ship technology, applied in the field of ships, can solve problems such as the inability to analyze and obtain ship performance
Inactive Publication Date: 2019-06-11
SHANGHAI MERCHANT SHIP DESIGN & RES INST
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[0003] Existing ship performance evaluation and prediction methods mainly analyze the impact of one or several environmental parameters on ship performance, such as one or several of environmental parameters such as wind, wave, current, swell, water depth, etc., cannot Comprehensive analysis of all environmental parameters and impact on vessel performance
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Embodiment 1
[0028] Embodiment 1 of the present invention provides a method for evaluating and predicting ship performance, see figure 1 A flow chart of a method for evaluating and predicting ship performance is shown, including the following steps:
[0029] Step S102, acquiring measurement data.
[0030] Measurement data include: wind data, wave data, current data, water depth data, displacement data, seawater temperature data and seawater density data; wind data refers to the external parameters that need to be used in the process of calculating the change of resistance related to wind, Wave data refers to the external parameters that need to be used in the process of calculating the amount of resistance change related to waves; seawater temperature data refers to the external parameters that need to be used in the process of calculating the amount of resistance change related to seawater temperature; seawater density The data refers to the external parameters that need to be used in th...
Embodiment 2
[0074] Embodiment 2 of the present invention provides a device for evaluating and predicting ship performance, see Figure 4 The structural diagram of a ship performance evaluation and prediction device shown includes a data module 41, a resistance module 42, a speed module 43, a power module 44 and an evaluation module 45. The functions of the above modules are as follows:
[0075] The data module 41 is used to obtain measurement data; the measurement data includes: wind data, wave data, current data, water depth data, displacement data, seawater temperature data and seawater density data;
[0076] A resistance module 42, configured to determine the amount of change in resistance according to wind data, wave data, seawater temperature data and seawater density data;
[0077] The speed module 43 is used to determine the change of the speed according to the current data and the water depth data;
[0078] A power module 44, configured to determine the amount of power change acc...
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Abstract
The invention provides a method and device for evaluating and predicting ship performance, and relates to the technical field of ships. The method comprises the steps: measured data are obtained; themeasured data comprise wind data, wave data, flow data, water depth data, displacement data, sea water temperature data and sea water density data; the change amount of resistance is determined according to the wind data, the wave data, the sea water temperature data and the sea water density data; the change amount of the sailing speed is determined according to the flow data and the water depthdata; the change amount of power is determined according to the displacement data; and the relationship among the sailing speed, fuel consumption and propeller rotation parameters is determined according to the change amount of the resistance, the change amount of the sailing speed and the change amount of the power. According to the method and the device, the change amount of the resistance, thesailing speed and the power is determined by obtaining the measured data of all environmental parameters, the relationship among the sailing speed, the fuel consumption and the propeller rotation parameters is obtained, comprehensive analysis can be conducted according to all the environmental parameters to obtain the influences on the ship performance, and the energy consumption level of a current ship is learnt.
Description
technical field [0001] The invention relates to the technical field of ships, in particular to a method and device for evaluating and predicting ship performance. Background technique [0002] At present, with the increasing development of shipbuilding and shipping markets, ship types are constantly changing. In the actual voyage of ships, ship performance evaluation and prediction is a very important technology. Ship performance evaluation and prediction can analyze the current ship performance. Fuel consumption level. Generally speaking, it is necessary to perform performance evaluation and prediction through the collected environmental parameters, which can be analyzed by collecting environmental parameters experienced by the ship in real time, such as wind, wave, current, surge, water depth and other factors, as well as the current real-time energy consumption of the ship. It can know the current fouling situation on the surface of the ship, and provide a basis for whet...
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