CN109866875A - Ship performance assessment and prediction technique and device - Google Patents
Ship performance assessment and prediction technique and device Download PDFInfo
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- CN109866875A CN109866875A CN201910169886.5A CN201910169886A CN109866875A CN 109866875 A CN109866875 A CN 109866875A CN 201910169886 A CN201910169886 A CN 201910169886A CN 109866875 A CN109866875 A CN 109866875A
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Abstract
The present invention provides a kind of assessment of ship performance and prediction technique and device, it is related to the technical field of ship, including obtains measurement data；Measurement data includes: wind data, unrestrained data, flow data, bathymetric data, displacement data, ocean temperature data and density of sea water data；The knots modification of resistance is determined according to wind data, unrestrained data, ocean temperature data and density of sea water data；The knots modification of the speed of a ship or plane is determined according to flow data and bathymetric data；The knots modification of power is determined according to displacement data；The relationship of the speed of a ship or plane, oil consumption and propeller rotation parameter is determined according to the knots modification of the knots modification of resistance, the knots modification of the speed of a ship or plane and power.The embodiment of the present invention is by obtaining the measurement data of all environmental parameters to determine resistance, the speed of a ship or plane and the knots modification of power, obtain the relationship of the speed of a ship or plane, oil consumption and propeller rotation parameter, it can be analyzed and be obtained the influence to ship performance comprehensively according to all environmental parameters, know the energy consumption level of current ship.
Description
Technical field
The present invention relates to technical field of ships, more particularly, to a kind of assessment of ship performance and prediction technique and device.
Background technique
Currently, with shipbuilding, shipping market it is increasingly developed, ship type is constantly changing, in the real navigation of ship
In, the Performance Evaluation of ship and prediction are a very important technologies, and the Performance Evaluation of ship and prediction can analyze currently
The oil consumption of ship is horizontal.It is generally desirable to carry out Performance Evaluation and prediction by the environmental parameter being collected into, receipts can be passed through
The environmental parameter that undergoes in real time of collection ship, such as wind, wave, flow, gush, depth of water factor, and the real time energy consumption of current ship carries out
Analysis, would know that the dirty bottom situation of current marine surface, and whether lie up to clear up to ship provides foundation；Ship can also be forecast at it
Energy consumption under his sea conditions, such as the sea situation after being known N hours by meteorological department carry out pre- according to the sea situation after N hours
Report.
Existing ship performance assessment and prediction technique, which mainly pass through, analyzes a certain item or a few environmental parameters to ship
The influence of performance, such as: wind wave, is flowed, is gushed, the one of them of environmental parameters such as the depth of water or several, can not be joined according to all environment
Number is analyzed comprehensively and obtains the influence to ship performance.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of assessment of ship performance and prediction technique and devices, with basis
The influence to ship performance is analyzed comprehensively and obtained to all environmental parameters, knows the energy consumption level of current ship.
In a first aspect, the embodiment of the invention provides a kind of assessment of ship performance and prediction techniques, comprising: obtain measurement number
According to；Measurement data includes: that wind data, unrestrained data, flow data, bathymetric data, displacement data, ocean temperature data and seawater are close
Degree evidence；The knots modification of resistance is determined according to wind data, unrestrained data, ocean temperature data and density of sea water data；According to fluxion
According to the knots modification for determining the speed of a ship or plane with bathymetric data；The knots modification of power is determined according to displacement data；According to the knots modification of resistance,
The knots modification of the speed of a ship or plane and the knots modification of power determine the relationship of the speed of a ship or plane, oil consumption and propeller rotation parameter.
With reference to first aspect, the embodiment of the invention provides the first possible embodiments of first aspect, wherein root
The step of determining the knots modification of resistance according to wind data, unrestrained data, ocean temperature data and density of sea water data, comprising: according to wind
Data determine the knots modification of the resistance as caused by wind；The knots modification of the resistance as caused by wave is determined according to unrestrained data；According to
Ocean temperature data and density of sea water data determine the change of the resistance as caused by ocean temperature data and density of sea water data
Amount；The knots modification of resistance is the knots modification of the resistance as caused by wind, the knots modification of the resistance as caused by wave and due to sea
The sum of the knots modification of resistance caused by coolant-temperature gage data and density of sea water data.
The possible embodiment of with reference to first aspect the first, the embodiment of the invention provides second of first aspect
Possible embodiment, wherein according to wind data determine the resistance as caused by wind knots modification the step of, comprising: by with
Lower formula calculates the knots modification of the resistance as caused by wind:
Wherein, RAAFor the knots modification of the resistance as caused by wind；Axv is the transverse projection face for including the water line of superstructure or more
Product；CAAFor air resistance coefficient；CAAIt (0) is air resistance coefficient windward；VGFor the speed over ground of ship；VWRrefFor the opposite wind of reference altitude
Speed；ψWRrefFor the opposite wind direction of reference altitude；ρAFor air mass density.
The possible embodiment of with reference to first aspect the first, the embodiment of the invention provides the third of first aspect
Possible embodiment, wherein according to unrestrained data determine the resistance as caused by wave knots modification the step of, comprising: by with
Lower formula calculates the knots modification of the resistance as caused by wave:Wherein, RAWLFor Added Resistance；ρs
For density of sea water；G is acceleration of gravity；B is the width of ship；H1/3For ariyoshi wave height；LBWLIt is maximum wide to water line for bow
Spend the 95% of distance.
The possible embodiment of with reference to first aspect the first, the embodiment of the invention provides the 4th kind of first aspect
Possible embodiment, wherein determined according to ocean temperature data and density of sea water data due to ocean temperature data and seawater
The step of knots modification of resistance caused by density data, comprising: calculated by following formula due to ocean temperature data and seawater
The knots modification of resistance caused by density data:Wherein,
Wherein, RASFor the knots modification of the resistance as caused by ocean temperature and density of sea water deviation；CFFor practical ocean temperature and seawater
The coefficient of frictional resistance of density；CF0For the coefficient of frictional resistance with reference to ocean temperature and density of sea water；CT0For with reference to ocean temperature
With the total drag coefficients of density of sea water；RFFor the frictional resistance of practical ocean temperature and density of sea water；RF0For with reference to ocean temperature
With the frictional resistance of density of sea water；RT0For the drag overall with reference to ocean temperature and density of sea water；S is wetted surface area；VSExist for ship
The speed of a ship or plane in water；ρsFor the density of sea water under practical ocean temperature and salt content；ρs0For with reference under ocean temperature and salt content
Density of sea water.
With reference to first aspect, the embodiment of the invention provides the 5th kind of possible embodiments of first aspect, wherein root
The step of determining the knots modification of the speed of a ship or plane according to flow data and bathymetric data, comprising: determined according to flow data due to the speed of a ship or plane caused by flowing
Knots modification；The knots modification of the speed of a ship or plane as caused by the depth of water is determined according to bathymetric data；The knots modification of the speed of a ship or plane is since conductance causes
The speed of a ship or plane knots modification and the sum of the knots modification of the speed of a ship or plane as caused by the depth of water.
The 5th kind of possible embodiment with reference to first aspect, the embodiment of the invention provides the 6th kind of first aspect
Possible embodiment, wherein according to flow data determine due to flow caused by the speed of a ship or plane knots modification the step of, comprising: by with
Lower formula calculates the knots modification due to the speed of a ship or plane caused by flowing:Wherein, VSIn water for ship
The speed of a ship or plane；VG1For ship the four-wheel underway first round speed over ground；VG2The reality taken turns for ship in four-wheel underway second
The speed of a ship or plane；VG3For ship the underway third round of four-wheel speed over ground；VG4For ship the underway fourth round of four-wheel practical boat
Speed.
The 5th kind of possible embodiment with reference to first aspect, the embodiment of the invention provides the 7th kind of first aspect
Possible embodiment, wherein the step of knots modification of the speed of a ship or plane as caused by the depth of water is determined according to bathymetric data, comprising: logical
Cross the knots modification that following formula calculates the speed of a ship or plane as caused by the depth of water:for；Wherein, Δ V is as caused by the depth of water
The knots modification of the speed of a ship or plane；VSFor the speed of a ship or plane of ship in water；H is the depth of water；AMFor cross-sectional area in underwater ship；G is gravity acceleration
Degree.
With reference to first aspect, the embodiment of the invention provides the 8th kind of possible embodiments of first aspect, wherein root
The step of determining the knots modification of power according to displacement data, comprising: the knots modification of power is calculated by following formula:Wherein, P1For the corresponding power of displacement during on-board testing is tested；P2To be surveyed in model test
The corresponding power of displacement during examination；▽1For the displacement during on-board testing test；▽2For during model test test
Displacement.
Second aspect, the embodiment of the present invention also provide a kind of assessment of ship performance and prediction meanss, comprising: data module,
For obtaining measurement data；Measurement data includes: wind data, unrestrained data, flow data, bathymetric data, displacement data, sea water temperature
Degree evidence and density of sea water data；Resistance module, for according to wind data, unrestrained data, ocean temperature data and density of sea water number
According to the knots modification for determining resistance；Speed of a ship or plane module, for determining the knots modification of the speed of a ship or plane according to flow data and bathymetric data；Power mould
Block, for determining the knots modification of power according to displacement data；Evaluation module, for being changed according to the knots modification of resistance, the speed of a ship or plane
The knots modification of variable and power determines the relationship of the speed of a ship or plane, oil consumption and propeller rotation parameter.
The embodiment of the present invention bring it is following the utility model has the advantages that
Ship performance assessment provided in an embodiment of the present invention and prediction technique and device, by obtaining all environmental parameters
Measurement data obtains the relationship of the speed of a ship or plane, oil consumption and propeller rotation parameter to determine resistance, the speed of a ship or plane and the knots modification of power, can
To be analyzed and be obtained the influence to ship performance comprehensively according to all environmental parameters, the energy consumption level of current ship is known.
Other feature and advantage of the disclosure will illustrate in the following description, alternatively, Partial Feature and advantage can be with
Deduce from specification or unambiguously determine, or by implement the disclosure above-mentioned technology it can be learnt that.
To enable the above objects, features, and advantages of the disclosure to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the flow chart of a kind of ship performance assessment and prediction technique provided in an embodiment of the present invention；
Fig. 2 is a kind of flow chart of the knots modification calculation method of resistance provided in an embodiment of the present invention；
Fig. 3 is a kind of flow chart of the knots modification calculation method of the speed of a ship or plane provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of a kind of ship performance assessment and prediction meanss provided in an embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
Currently, existing ship performance assessment and prediction technique, which mainly pass through, analyzes a certain item or a few environmental parameters pair
The influence of ship performance, such as: wind wave, is flowed, is gushed, the one of them of environmental parameters such as the depth of water or several, can not be according to all rings
Border parameter is analyzed comprehensively and obtains the influence to ship performance.Based on this, a kind of ship provided in an embodiment of the present invention
Energy assessment and prediction technique and device, by obtaining the measurement data of all environmental parameters to determine resistance, the speed of a ship or plane and power
Knots modification obtains the relationship of the speed of a ship or plane, oil consumption and propeller rotation parameter, analysis comprehensively can be carried out according to all environmental parameters simultaneously
The influence to ship performance is obtained, knows the energy consumption level of current ship.
For convenient for understanding the present embodiment, first to a kind of assessment of ship performance disclosed in the embodiment of the present invention and
Prediction technique describes in detail.
Embodiment 1
The embodiment of the present invention 1 provides a kind of assessment of ship performance and prediction technique, a kind of ship shown in Figure 1
The flow chart with prediction technique can be assessed, is included the following steps:
Step S102 obtains measurement data.
Measurement data include: wind data, unrestrained data, flow data, bathymetric data, displacement data, ocean temperature data and
Density of sea water data；Wind data refers to the external world's ginseng needed during calculating resistance knots modification relevant to wind using arriving
Number, unrestrained data, which refer to, to be needed during to unrestrained relevant calculating resistance knots modification using the external parameter arrived；Ocean temperature
Data, which refer to, to be needed during calculating resistance knots modification relevant to ocean temperature using the external parameter arrived；Density of sea water
Data, which refer to, to be needed during calculating resistance knots modification relevant to density of sea water using the external parameter arrived；Flow data is
Finger needs during calculating speed of a ship or plane knots modification relevant to stream using the external parameter arrived；Bathymetric data refer to the depth of water
It needs during relevant calculating speed of a ship or plane knots modification using the external parameter arrived；Displacement data refer to related to displacement
Calculating power knots modification during need using the external parameter arrived.External environment parameters generally comprise wind, wave, flow, gush,
The factors such as the depth of water are accounted for and are analyzed to all external environments in the present embodiment.
Step S104 determines the change of resistance according to wind data, unrestrained data, ocean temperature data and density of sea water data
Amount.
Wind, wave, ocean temperature and density of sea water in external environment parameters can change the resistance for the water that the ship is subject to, because
This can determine the knots modification of resistance according to wind data, unrestrained data, ocean temperature data and density of sea water data.Wind speed is faster,
Wave is bigger, and the resistance that ship receives also can be bigger.
Step S106 determines the knots modification of the speed of a ship or plane according to flow data and bathymetric data.
Stream and the depth of water in external environment parameters will affect the speed of the speed of a ship or plane, therefore can be according to flow data and bathymetric data
Determine the knots modification of the speed of a ship or plane.The speed of flow velocity degree will affect the speed of a ship or plane, and if ship is navigated by water in phytal zone, can because the depth of water is shallower and
The speed of a ship or plane is caused to slow down.
Step S108 determines the knots modification of power according to displacement data.
Displacement is used to indicate that the important indicator of Ship's Dimension size, is that ship by the requirement of design fills cargo, i.e.,
The quality for the water that full load arranges.Displacement usually indicates that the size of the displacement of ship will affect power with tonnage, general next
It says, displacement is bigger, then power is higher.
Step S110 determines the speed of a ship or plane, oil consumption and spiral shell according to the knots modification of the knots modification of resistance, the knots modification of the speed of a ship or plane and power
Revolve the relationship of paddle rotation parameter.
Step S102, S104, S106 and S108 analyze all environmental parameters, have obtained the change of resistance
Amount, the knots modification of the speed of a ship or plane and power knots modification can by the knots modification of resistance, the knots modification of the knots modification of the speed of a ship or plane and power
To determine the relationship of the speed of a ship or plane during ship's navigation, oil consumption and propeller rotation parameter.
If the wind data obtained, unrestrained data, flow data, bathymetric data, displacement data, ocean temperature data and seawater
The measurement data such as density data are real time data, then can determine real-time analysis, determine the real time energy consumption of current ship, if I
The measurement data that obtains be following prediction data, then can predict the energy consumption of following ship.
The above method provided in an embodiment of the present invention, by obtaining the measurement data of all environmental parameters with determine resistance,
The knots modification of the speed of a ship or plane and power obtains the relationship of the speed of a ship or plane, oil consumption and propeller rotation parameter, can according to all environmental parameters into
The influence to ship performance is analyzed and obtained to row comprehensively, knows the energy consumption level of current ship.
In the step of determining the knots modification of resistance according to wind data, unrestrained data, ocean temperature data and density of sea water data,
Every kind of data calculate separately the knots modification of corresponding resistance, a kind of knots modification calculation method of resistance shown in Figure 2
Flow chart, include the following steps:
Step S202 determines the knots modification of the resistance as caused by wind according to wind data.
Wind data determines the knots modification of the resistance as caused by wind, calculates the resistance as caused by wind by following formula
Knots modification:
Wherein, RAAFor the knots modification of the resistance as caused by wind, unit N；Axv be include superstructure water line with
On transverse projection area, unit m2；CAAFor air resistance coefficient；CAAIt (0) is air resistance coefficient windward；VGFor the speed over ground of ship,
Unit is m/s；VWRrefFor the relative wind velocity of reference altitude, unit m/s；ψWRrefFor the opposite wind direction of reference altitude, unit is
Degree；ρAFor air mass density, unit kg/m3。
Step S204 determines the knots modification of the resistance as caused by wave according to unrestrained data.
Unrestrained data determine the knots modification of the resistance as caused by wave, calculate the resistance as caused by wave by following formula
Knots modification:
Wherein, RAWLFor Added Resistance, unit N；ρsFor density of sea water, unit kg/m3；G is acceleration of gravity, unit
For m/s2；B is the width of ship, unit m；H1/3For ariyoshi wave height, unit m；LBWLFor bow to water line maximum width
The 95% of distance, unit m.
Step S206 is determined according to ocean temperature data and density of sea water data due to ocean temperature data and density of sea water
The knots modification of resistance caused by data.
Ocean temperature data and density of sea water data determine the knots modification of the resistance as caused by wave, pass through following formula meter
Calculate the knots modification of the resistance as caused by ocean temperature and density of sea water:
Wherein,
Wherein, RASFor the knots modification of the resistance as caused by ocean temperature and density of sea water deviation, unit N；CFFor reality
The coefficient of frictional resistance of border ocean temperature and density of sea water；CF0For the coefficient of frictional resistance with reference to ocean temperature and density of sea water；
CT0For the total drag coefficients with reference to ocean temperature and density of sea water；RFFor the frictional resistance of practical ocean temperature and density of sea water,
Unit is N；RF0For the frictional resistance with reference to ocean temperature and density of sea water, unit N；RT0To refer to ocean temperature and seawater
The drag overall of density, unit N；S is wetted surface area, unit m2；VSFor the speed of a ship or plane of ship in water, unit m/s；ρsFor reality
Density of sea water under border ocean temperature and salt content, unit kg/m3；ρs0It is close with reference to the seawater under ocean temperature and salt content
Degree, unit kg/m3。
Step S208, the knots modification of resistance are that the knots modification of the resistance as caused by wind, the resistance as caused by wave change
The sum of the knots modification of variable and the resistance as caused by ocean temperature data and density of sea water data.
The above method provided in an embodiment of the present invention, by calculating separately the knots modification of resistance caused by wind, since wave is led
The knots modification of the knots modification of the resistance of cause and the resistance as caused by ocean temperature data and density of sea water data, is asked
With obtain the knots modification of resistance.
In the step of determining the knots modification of the speed of a ship or plane according to flow data and bathymetric data, every kind of data calculate separately respective correspondence
The speed of a ship or plane knots modification, a kind of flow chart of the knots modification calculation method of speed of a ship or plane shown in Figure 3 includes the following steps:
Step S302 determines the knots modification due to the speed of a ship or plane caused by flowing according to flow data.
Flow data determines the knots modification due to the speed of a ship or plane caused by flowing, and is calculated by following formula due to the speed of a ship or plane caused by flowing
Knots modification:
Wherein, VSFor the speed of a ship or plane of ship in water, unit is section；VG1For ship the four-wheel underway first round practical boat
Speed, unit are section；VG2It is ship in the speed over ground of underway second wheel of four-wheel, unit is section；VG3It is ship in four-wheel navigation
Third round speed over ground, unit be section；VG4It is ship in the speed over ground of the underway fourth round of four-wheel, unit is section.
Step S304 determines the knots modification of the speed of a ship or plane as caused by the depth of water according to bathymetric data.
Bathymetric data determines the knots modification of the speed of a ship or plane as caused by the depth of water, is calculated as caused by the depth of water by following formula
The knots modification of the speed of a ship or plane:
for
Wherein, Δ V is the knots modification of the speed of a ship or plane as caused by the depth of water, unit m/s；VSIt is single for the speed of a ship or plane of ship in water
Position is m/s；H is the depth of water, unit m；AMFor cross-sectional area in underwater ship, unit m2；G is acceleration of gravity, and unit is
m/s2。
Step S306, the knots modification and the speed of a ship or plane as caused by the depth of water that the knots modification of the speed of a ship or plane is the speed of a ship or plane caused as conductance
The sum of knots modification.
The above method provided in an embodiment of the present invention flows the knots modification of the caused speed of a ship or plane and due to water by calculating separately
The knots modification of the speed of a ship or plane caused by depth, is summed, and the knots modification of the speed of a ship or plane is obtained.
The step of knots modification for determining power according to displacement data, can calculate changing for power by following formula
Variable:
Wherein, P1For the corresponding power of displacement during on-board testing is tested, unit W；P2To be surveyed in model test
The corresponding power of displacement during examination, unit W；▽1For the displacement during on-board testing test, unit m3；▽2For
Displacement during model test test, unit m3。
The above method provided in an embodiment of the present invention, by calculating separately the power of mailbox test and on-board testing test,
Determine the knots modification of power.
A kind of ship performance assessment provided in an embodiment of the present invention and prediction technique, by the survey for obtaining all environmental parameters
Data are measured to determine resistance, the speed of a ship or plane and the knots modification of power, obtain the relationship of the speed of a ship or plane, oil consumption and propeller rotation parameter；Pass through
Calculate separately the knots modification of resistance caused by wind, the knots modification of the resistance as caused by wave and due to ocean temperature data and sea
The knots modification of resistance caused by water density data, is summed, and the knots modification of resistance is obtained；By calculating separately boat caused by stream
The knots modification of speed and the knots modification of the speed of a ship or plane as caused by the depth of water, are summed, obtain the knots modification of the speed of a ship or plane；By counting respectively
The power for calculating mailbox test and on-board testing test, determines the knots modification of power.It can be carried out according to all environmental parameters comprehensive
The influence to ship performance is analyzed and obtained, knows the energy consumption level of current ship.
Embodiment 2
The embodiment of the present invention 2 provides a kind of assessment of ship performance and prediction meanss, a kind of ship performance shown in Figure 4
The structural schematic diagram of assessment and prediction meanss, including data module 41, resistance module 42, speed of a ship or plane module 43,44 and of power module
The function of evaluation module 45, above-mentioned each module is as follows:
Data module 41, for obtaining measurement data；Measurement data includes: wind data, unrestrained data, flow data, depth of water number
According to, displacement data, ocean temperature data and density of sea water data；
Resistance module 42, for determining resistance according to wind data, unrestrained data, ocean temperature data and density of sea water data
Knots modification；
Speed of a ship or plane module 43, for determining the knots modification of the speed of a ship or plane according to flow data and bathymetric data；
Power module 44, for determining the knots modification of power according to displacement data；
Evaluation module 45, for determining the speed of a ship or plane, oil according to the knots modification of the knots modification of resistance, the knots modification of the speed of a ship or plane and power
The relationship of consumption and propeller rotation parameter.
It is apparent to those skilled in the art that for convenience and simplicity of description, the ship of foregoing description
The specific work process of Performance Evaluation and prediction meanss, can refer to corresponding processes in the foregoing method embodiment, herein no longer
It repeats.
Ship performance assessment provided in an embodiment of the present invention and prediction meanss, are commented with ship performance provided by the above embodiment
Estimate and reaches identical technical effect so also can solve identical technical problem with prediction technique technical characteristic having the same.
Finally, it should be noted that embodiment described above, only a specific embodiment of the invention, to illustrate the present invention
Technical solution, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, those skilled in the art should understand that: anyone skilled in the art
In the technical scope disclosed by the present invention, it can still modify to technical solution documented by previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention, should all cover in protection of the invention
Within the scope of.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (10)
1. a kind of ship performance assessment and prediction technique characterized by comprising
Obtain measurement data；The measurement data includes: wind data, unrestrained data, flow data, bathymetric data, displacement data, sea
Coolant-temperature gage data and density of sea water data；
Changing for resistance is determined according to the wind data, the unrestrained data, the ocean temperature data and the density of sea water data
Variable；
The knots modification of the speed of a ship or plane is determined according to the flow data and the bathymetric data；
The knots modification of power is determined according to the displacement data；
The speed of a ship or plane, oil consumption are determined according to the knots modification of the knots modification of the resistance, the knots modification of the speed of a ship or plane and the power
With the relationship of propeller rotation parameter.
2. the method according to claim 1, wherein it is described according to the wind data, the unrestrained data, the sea
The step of coolant-temperature gage data and the density of sea water data determine the knots modification of resistance, comprising:
The knots modification of the resistance as caused by wind is determined according to the wind data；
The knots modification of the resistance as caused by wave is determined according to the unrestrained data；
It is determined according to the ocean temperature data and the density of sea water data due to the ocean temperature data and the seawater
The knots modification of resistance caused by density data；
The knots modification of the resistance is the change of the knots modification, the resistance as caused by wave of the resistance as caused by wind
The sum of the knots modification of amount and the resistance as caused by the ocean temperature data and the density of sea water data.
3. according to the method described in claim 2, it is characterized in that, described determined according to the wind data is hindered as caused by wind
The step of knots modification of power, comprising:
The knots modification of the resistance as caused by wind is calculated by following formula:
Wherein, RAAFor the knots modification of the resistance as caused by wind；Axv is the transverse direction for including the water line of superstructure or more
Projected area；CAAFor air resistance coefficient；CAAIt (0) is air resistance coefficient windward；VGFor the speed over ground of ship；VWRrefFor reference altitude
Relative wind velocity；ψWRrefFor the opposite wind direction of reference altitude；ρAFor air mass density.
4. according to the method described in claim 2, it is characterized in that, described determined according to the unrestrained data is hindered as caused by wave
The step of knots modification of power, comprising:
The knots modification of the resistance as caused by wave is calculated by following formula:
Wherein, RAWLFor Added Resistance；ρsFor density of sea water；G is acceleration of gravity；B is the width of ship；H1/3For ariyoshi wave height；
LBWLFor bow to the 95% of water line maximum width distance.
5. according to the method described in claim 2, it is characterized in that, described close according to the ocean temperature data and the seawater
The step of degree is according to the knots modification for determining the resistance as caused by the ocean temperature data and the density of sea water data, packet
It includes:
The knots modification of the resistance as caused by the ocean temperature data and the density of sea water data is calculated by following formula:
Wherein,
Wherein, RASFor the knots modification of the resistance as caused by ocean temperature and density of sea water deviation；CFFor practical sea water temperature
The coefficient of frictional resistance of degree and density of sea water；CF0For the coefficient of frictional resistance with reference to ocean temperature and density of sea water；CT0For reference
The total drag coefficients of ocean temperature and density of sea water；RFFor the frictional resistance of practical ocean temperature and density of sea water；RF0For reference
The frictional resistance of ocean temperature and density of sea water；RT0For the drag overall with reference to ocean temperature and density of sea water；S is wetted surface area；
VSFor the speed of a ship or plane of ship in water；ρsFor the density of sea water under practical ocean temperature and salt content；ρs0To refer to ocean temperature and salt
Density of sea water under content.
6. the method according to claim 1, wherein described determine according to the flow data and the bathymetric data
The step of knots modification of the speed of a ship or plane, comprising:
The knots modification due to the speed of a ship or plane caused by flowing is determined according to the flow data；
The knots modification of the speed of a ship or plane as caused by the depth of water is determined according to the bathymetric data；
The knots modification of the speed of a ship or plane is the knots modification and the speed of a ship or plane as caused by the depth of water of the speed of a ship or plane as caused by stream
The sum of knots modification.
7. according to the method described in claim 6, it is characterized in that, described determine according to the flow data due to boat caused by flowing
The step of knots modification of speed, comprising:
The knots modification due to the speed of a ship or plane caused by flowing is calculated by following formula:
Wherein, VSFor the speed of a ship or plane of ship in water；VG1For ship the four-wheel underway first round speed over ground；VG2It is ship in four-wheel
The speed over ground of underway second wheel；VG3For ship the underway third round of four-wheel speed over ground；VG4It navigates for ship in four-wheel
The speed over ground of fourth round in row.
8. according to the method described in claim 6, it is characterized in that, described determine according to the bathymetric data since the depth of water causes
The speed of a ship or plane knots modification the step of, comprising:
The knots modification of the speed of a ship or plane as caused by the depth of water is calculated by following formula:
Wherein, Δ V is the knots modification of the speed of a ship or plane as caused by the depth of water；VSFor the speed of a ship or plane of ship in water；H is the depth of water；AMFor water
It goes ashore middle cross-sectional area；G is acceleration of gravity.
9. the method according to claim 1, wherein the change for determining power according to the displacement data
The step of amount, comprising:
The knots modification of power is calculated by following formula:
Wherein, P1For the corresponding power of displacement during on-board testing is tested；P2For the displacement pair during model test
The power answered；For the displacement during on-board testing test；For the displacement during the model test.
10. a kind of ship performance assessment and prediction meanss characterized by comprising
Data module, for obtaining measurement data；The measurement data include: wind data, unrestrained data, flow data, bathymetric data,
Displacement data, ocean temperature data and density of sea water data；
Resistance module, for according to the wind data, the unrestrained data, the ocean temperature data and the density of sea water data
Determine the knots modification of resistance；
Speed of a ship or plane module, for determining the knots modification of the speed of a ship or plane according to the flow data and the bathymetric data；
Power module, for determining the knots modification of power according to the displacement data；
Evaluation module, for being determined according to the knots modification of the knots modification of the resistance, the knots modification of the speed of a ship or plane and the power
The speed of a ship or plane, oil consumption and propeller rotation parameter relationship.
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| CN110979589A (en) * | 2019-12-16 | 2020-04-10 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | Ship control method and device based on wave resistance-increasing prediction and intelligent terminal |
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