CN105426681A - Typhoon and conventional wind field characteristic parameter difference analysis method - Google Patents

Abstract

The invention discloses a typhoon and conventional wind field characteristic parameter difference analysis method. The method comprises the following steps: 1, calculating characteristic parameters of a wind field; 2, collecting and arranging actual measurement data of typhoon; 3, calculating wind characteristics at site of the typhoon; and 4, comparing typhoon wind field parameters obtained in the steps 1, 2 and 3 with conventional wind field parameters. According to the typhoon and conventional wind field characteristic parameter difference analysis method, the characteristic parameters of the conventional wind field and partial parameters of the typhoon wind field can be calculated through the step 1; the wind characteristics at site of the typhoon wind field can be effectively calculated through the steps 2 and 3; and the typhoon and conventional wind field characteristic parameter difference can be effectively analyzed through the step 4.

Description

Typhoon and conventional wind wind field characterisitic parameter difference analysis method

Technical field

The present invention relates to a kind of analytical approach, relate to a kind of typhoon and conventional wind wind field characterisitic parameter difference analysis method in particular.

Background technology

By the impact of global warming, take typhoon as disaster caused by a windstorm phenomenon that the special climate of representative causes has increased frequency, Disaster degree to aggravate trend all over the world.Meanwhile, field measurement results of study a large amount of in recent years shows, typhoon near-earth the PBL wind environmental characteristics is different from good state climatic model.And transmission tower is as a kind of structure to wind load sensitivity, the typhoon regional transmission tower collapse accident that passes by is of common occurrence.

Investigation and analysis for above-mentioned accident shows, the generation of transmission line of electricity damage accident is less than normal relevant with the design wind speed value that specification specifies, has the typhoon maximum instantaneous power of record even to exceed 70m/s.There is larger difference between typhoon Maximum wind speed and conventional wind Maximum wind speed, the design wind speed that most of load code provides only can preferably for the wind force proofing design under good state weather.Therefore, top priority compares typhoon and conventional wind wind field characterisitic parameter difference, specifies wind load shaft tower acted under typhoon effect.The wind load prerequisite under clear and definite typhoon effect, shaft tower acted on is the wind field characterisitic parameter needing effectively to calculate typhoon, but existing not good computing method effectively can calculate the wind field characterisitic parameter of typhoon, therefore just can not Typhoon Wind Field and conventional wind wind field effectively be analyzed very well.

Summary of the invention

For the deficiency that prior art exists, the object of the present invention is to provide a kind of analytical approach that can be good at Typhoon Wind Field and conventional wind wind field characterisitic parameter difference being carried out analyzing.

For achieving the above object, the invention provides following technical scheme: a kind of typhoon and conventional wind wind field characterisitic parameter difference analysis method, comprise the steps:

One, each characterisitic parameter of wind field is calculated;

Two, the field data of typhoon is compiled;

Three, the near-earth wind characteristic of typhoon is calculated;

Four, Typhoon Wind Field parameter above-mentioned steps one, two, three drawn and conventional wind Wind parameters in wind contrast.

As a further improvement on the present invention, above-mentioned steps one comprises the steps: again 1, calculates mean wind speed and wind angle, the wind angle of attack; 2, wind profile is calculated; 3, gust wind factor is calculated; 4, turbulivity is calculated; 5, pulsating wind spectrum is listed; 6, show that parameter draws the wind field characterisitic parameter of typhoon according to above-mentioned steps;

Above-mentioned steps two is the wind speed adopting anemometer tower to measure typhoon differing heights place near the ground, and analyzes observation tower periphery landforms;

Above-mentioned steps three is the near-earth wind characteristic obtaining typhoon by calculating the gust wind factor of typhoon and turbulivity.

As a further improvement on the present invention, the mean wind speed in above-mentioned steps 1 comprises horizontal mean wind speed and vertical mean wind speed, and wherein, the average wind velocity U of level is drawn by following formulae discovery with vertical mean wind speed W:

$U=\sqrt{\stackrel{\‾}{u{\left(t\right)}^2}+\stackrel{\‾}{v{\left(t\right)}^2}};W=\stackrel{\‾}{w\left(t\right)};$

In above-mentioned formula, U is horizontal mean wind speed, and u (t) is east wind speed upwards, and v (t) is north wind speed upwards, and W is vertical mean wind speed, and w (t) is the wind speed in vertical direction;

Wind angle θ in above-mentioned steps one is drawn by following formulae discovery;

$\mathrm{\β}={\mathrm{tg}}^{-1}(\stackrel{\‾}{v\left(t\right)}/\stackrel{\‾}{u\left(t\right)});$

θ=270-β, when time, southwester to;

θ=90-β, when time, northeaster to;

θ=270+ β, when time, northwester to;

θ=90+ β, when time, southeaster to;

In formula, t is averaging time, and β is intermediate angle;

The wind angle of attack in above-mentioned steps one is the angle between mean wind speed and surface level, when wind speed vertical component straight up time, the wind angle of attack is just, otherwise is negative.

As a further improvement on the present invention, the wind profile in above-mentioned steps 2 is drawn by following formulae discovery:

$\frac{u\left(z\right)}{u\left(z_0\right)}={\left(\frac{z}{z_0}\right)}^{\∂};$

In formula, u (z) represents the wind speed at terrain clearance z place; U (z ₀) represent terrain clearance z ₀the wind speed at place; Wherein z and z here ₀represent height value, α represents wind profile coefficient.

As a further improvement on the present invention, the gust wind factor in above-mentioned steps 3 is drawn by following formulae discovery:

$G_N=\frac{max\left({\stackrel{\‾}{U}}_{3s}\right)}{U};$

In formula, GN is gust wind factor, for the maximal value apart from mean wind speed when maximum instantaneous power is all 3s in 10min top, U is mean wind speed.

As a further improvement on the present invention, the turbulivity in above-mentioned steps 4 is drawn by following formulae discovery:

$I_i=\frac{{\mathrm{\σ}}_i}{U},(i=u,v,w);$

σ in formula _u, σ _vand σ _wrepresent that down wind, horizontal beam wind are to the root variance with vertical fluctuating wind speed u (t), v (t) and w (t) respectively; I _u, I _vand I _wbe respectively down wind, horizontal beam wind to vertical turbulivity.

As a further improvement on the present invention, the pulsating wind spectrum in described step 5 comprises with the wind aweather spectrum, beam wind and aweather composes and vertical wind spectrum.

As a further improvement on the present invention, described with the wind aweather composing comprises:

Simiu composes: $\frac{{\mathrm{nS}}_u(n,z)}{{u_{*}}^2}=\frac{200f_z}{{(1+50f_z)}^{5/3}};$

Kaimail composes: $\frac{{\mathrm{nS}}_u(n,z)}{{u_{*}}^2}=\frac{150f_z}{{(1+33f_z)}^{5/3}};$

Davenport composes: $\frac{{\mathrm{nS}}_u(n,z)}{{u_{*}}^2}=\frac{4f^2}{{(1+f^2)}^{4/3}};$

Harris composes: $\frac{{\mathrm{nS}}_u(n,z)}{{u_{*}}^2}=\frac{4{f_z}^2}{{(1+{f_z}^2)}^{5/6}};$

In formula, S _u(n, z) is wind spectrum, U _*represent friction velocity, u ₁₀for the mean wind speed of 10m At The Height, U _zfor the mean wind speed at height Z place, Z is height number, and n is coefficient.

As a further improvement on the present invention, described beam wind is aweather composed and is comprised:

Simiu composes: $\frac{{\mathrm{nS}}_u(n,z)}{{u_{*}}^2}=\frac{15f_z}{{(1+9.5f_z)}^{5/3}};$

Kaimail composes: $\frac{{\mathrm{nS}}_u(n,z)}{{u_{*}}^2}=\frac{17f_z}{{(1+9.5f_z)}^{5/3}};$

In formula, S _u(n, z) is wind spectrum, U _*represent friction velocity, u ₁₀for the mean wind speed of 10m At The Height, U _zfor the mean wind speed at height Z place, Z is height number, and n is coefficient.

As a further improvement on the present invention, described vertical wind spectrum comprises:

Kaimail composes: $\frac{{\mathrm{nS}}_u(n,z)}{{u_{*}}^2}=\frac{2f_z}{{(1+5.3f_z)}^{5/3}};$

Panofsky composes: $\frac{{\mathrm{nS}}_u(n,z)}{{u_{*}}^2}=\frac{6f_z}{{(1+4f_z)}^{5/3}};$

Lumley composes: $\frac{{\mathrm{nS}}_u(n,z)}{{u_{*}}^2}=\frac{3.36f_z}{{(1+10f_z)}^{5/3}};$

In formula, S _u(n, z) is wind spectrum, U _*represent friction velocity, u ₁₀for the mean wind speed of 10m At The Height, U _zfor the mean wind speed at height Z place, Z is height number, and n is coefficient.

The present invention has following beneficial effect, just the parameters of conventional wind field and the partial parameters of Typhoon Wind Field effectively can be calculated by the setting of step one, the field data of typhoon just effectively can be collected by the setting of step 2, the near-earth wind characteristic of typhoon just effectively can be calculated by the setting of step 3, so just can obtain the Wind parameters in wind of typhoon, so just effectively conventional wind wind field characterisitic parameter and Typhoon Wind Field characterisitic parameter can be carried out one and effectively contrast by arranging of step 4, avoiding can not well to the problem that difference between Typhoon Wind Field and conventional wind wind field is analyzed in prior art.

Embodiment

A kind of typhoon of the present embodiment and conventional wind wind field characterisitic parameter difference analysis method, comprise the steps:

One, each characterisitic parameter of wind field is calculated;

Two, the field data of typhoon is compiled;

Three, the near-earth wind characteristic of typhoon is calculated;

Four, by above-mentioned steps one, two, the three Typhoon Wind Field parameters drawn and conventional wind Wind parameters in wind contrast, when Typhoon Wind Field and conventional wind wind field characteristic are carried out variance analysis by needs, first each characterisitic parameter of conventional wind field and the partial parameters of Typhoon Wind Field is calculated, after calculating completes, then the field data of typhoon is collected, then the field data of typhoon is utilized effectively to calculate the near-earth wind characteristic of typhoon, finally the characterisitic parameter obtaining Typhoon Wind Field characterisitic parameter and conventional wind wind field is carried out contrast difference, so just can be good at the difference learnt between the two, this makes it possible to the Anti-Typhoon electric force pole tower of better construction place.As a kind of embodiment improved, above-mentioned steps one comprises the steps: again 1, calculates mean wind speed and wind angle, the wind angle of attack; 2, wind profile is calculated; 3, gust wind factor is calculated; 4, turbulivity is calculated; 5, pulsating wind spectrum is listed; 6, show that parameter draws the wind field characterisitic parameter of typhoon according to above-mentioned steps;

Above-mentioned steps two is the wind speed adopting anemometer tower to measure typhoon differing heights place near the ground, and analyzes observation tower periphery landforms;

Above-mentioned steps three is the near-earth wind characteristic obtaining typhoon by calculating the gust wind factor of typhoon and turbulivity, when calculating typhoon and conventional wind wind field characterisitic parameter, first calculates mean wind speed and wind angle, the wind angle of attack, then wind profile is calculated, then gust wind factor is calculated, then turbulivity is calculated, finally list pulsating wind spectrum, so just can show that parameter draws the wind field characterisitic parameter of typhoon and conventional wind according to above-mentioned, wherein the near-earth wind characteristic of Typhoon Wind Field here also needs to calculate, thus, anemometer tower just can be utilized to measure the wind speed at typhoon differing heights place near the ground, and to combine with wind speed according to anemometer tower periphery landforms and calculate the near-earth wind characteristic of typhoon, so just can be good at the wind field characterisitic parameter of Typhoon Wind Field characterisitic parameter and conventional wind to compare, this makes it possible to the difference well known between the two, just can electric force pole tower that effectively construction place is Anti-Typhoon.

As a kind of embodiment improved, the mean wind speed in above-mentioned steps 1 comprises horizontal mean wind speed and vertical mean wind speed, and wherein, the average wind velocity U of level is drawn by following formulae discovery with vertical mean wind speed W:

$U=\sqrt{\stackrel{\‾}{u{\left(t\right)}^2}+\stackrel{\‾}{v{\left(t\right)}^2}};W=\stackrel{\‾}{w\left(t\right)};$

In above-mentioned formula, U is horizontal mean wind speed, and u (t) is east wind speed upwards, and v (t) is north wind speed upwards, and W is vertical mean wind speed, and w (t) is the wind speed in vertical direction;

Wind angle θ in above-mentioned steps 1 is drawn by following formulae discovery;

$\mathrm{\β}={\mathrm{tg}}^{-1}(\stackrel{\‾}{v\left(t\right)}/\stackrel{\‾}{u\left(t\right)});$

θ=270-β, when time, southwester to;

θ=90-β, when time, northeaster to;

θ=270+ β, when time, northwester to;

θ=90+ β, when time, southeaster to;

In formula, t is averaging time, and β is intermediate angle.

The wind angle of attack in above-mentioned steps 1 is the angle between mean wind speed and surface level, when wind speed vertical component straight up time, the wind angle of attack is just, otherwise be negative, by formula, east mean wind speed is upwards carried out out root with north wind speed upwards to calculate, so just effectively can calculate the mean wind speed in horizontal direction, then vertical mean wind speed is directly calculated again, by the mean wind speed in horizontal direction and the mean wind speed in vertical direction comprehensive, just effectively can draw mean wind speed, just effectively intermediate angle β can be calculated by formula by being combined with wind speed the time, then just effectively wind angle can be calculated by intermediate angle β, the wind angle of attack simultaneously in the present embodiment is the angle between mean wind speed and surface level, existing mathematical formulae so just can be effectively utilized effectively to calculate the angle of the air-out angle of attack.

As a kind of embodiment improved, the wind profile in above-mentioned steps 2 is drawn by following formulae discovery:

$\frac{u\left(z\right)}{u\left(z_0\right)}={\left(\frac{z}{z_0}\right)}^{\∂};$

In formula, u (z) represents the wind speed at terrain clearance z place; U (z ₀) represent terrain clearance z ₀the wind speed at place; Wherein z and z here ₀represent height value, α represents wind profile coefficient, and according to the definition of wind profile, the wind speed of each height, along the rule of height change, thus by above-mentioned formula, is carried out whole calculating and just effectively can calculate wind profile by mean wind speed.

As a kind of embodiment improved, the gust wind factor in above-mentioned steps 3 is drawn by following formulae discovery:

$G_N=\frac{max\left({\stackrel{\‾}{U}}_{3s}\right)}{U};$

In formula, G _nfor gust wind factor, for the maximal value apart from mean wind speed when maximum instantaneous power is all 3s in 10min top, U is mean wind speed, according to the definition of gust wind factor, gust wind factor is the physical quantity characterizing fluctuating wind intensity, it be commonly defined as a timing apart from the ratio of maximum instantaneous power and the mean wind speed of distance time this, thus the present embodiment just effectively can calculate gust wind factor by the ratio of the maximum instantaneous power in 10min and mean wind speed.

As a kind of embodiment improved, the turbulivity in above-mentioned steps 4 is drawn by following formulae discovery:

$I_i=\frac{{\mathrm{\σ}}_i}{U},(i=u,v,w);$

σ in formula _u, σ _vand σ _wrepresent that down wind, horizontal beam wind are to the root variance with vertical fluctuating wind speed u (t), v (t) and w (t) respectively; I _u, I _vand I _wbe respectively down wind, horizontal beam wind to vertical turbulivity, the fluctuation intensity of wind speed in turbulent flow is often characterized in actual applications by nondimensional turbulence intensity, apart from the ratio between interior fluctuating wind speed root variance and mean wind speed when it is defined as standard, by by the ratio of down wind root variance and mean wind speed, by horizontal beam wind to root variance and mean wind speed ratio, the ratio of vertical fluctuating wind speed root variance and mean wind speed just effectively can be drawn turbulivity.

As a kind of embodiment improved, pulsating wind spectrum in described step 5 comprises with the wind aweather spectrum, beam wind and aweather composes and vertical wind spectrum, aweather composes with the wind, beam wind aweather composes and vertical wind is composed and can effectively be strangled out required pulsating wind spectrum by listing.

As a kind of embodiment improved, described with the wind aweather composing comprises:

Simiu composes: $\frac{{\mathrm{nS}}_u(n,z)}{{u_{*}}^2}=\frac{200f_z}{{(1+50f_z)}^{5/3}};$

Kaimail composes: $\frac{{\mathrm{nS}}_u(n,z)}{{u_{*}}^2}=\frac{150f_z}{{(1+33f_z)}^{5/3}};$

Davenport composes: $\frac{{\mathrm{nS}}_u(n,z)}{{u_{*}}^2}=\frac{4f^2}{{(1+f^2)}^{4/3}};$

Harris composes: $\frac{{\mathrm{nS}}_u(n,z)}{{u_{*}}^2}=\frac{4{f_z}^2}{{(1+{f_z}^2)}^{5/6}};$

In formula, S _u(n, z) is wind spectrum, U _*represent friction velocity, u ₁₀for the mean wind speed of 10m At The Height, U _zfor the mean wind speed at height Z place, Z is height number, and n is coefficient, just effectively can be listed aweather compose with the wind by above formula.

As a kind of embodiment improved, described beam wind is aweather composed and is comprised:

Simiu composes: $\frac{{\mathrm{nS}}_u(n,z)}{{u_{*}}^2}=\frac{15f_z}{{(1+9.5f_z)}^{5/3}};$

Kaimail composes: $\frac{{\mathrm{nS}}_u(n,z)}{{u_{*}}^2}=\frac{17f_z}{{(1+9.5f_z)}^{5/3}};$

In formula, S _u(n, z) is wind spectrum, U _*represent friction velocity, u ₁₀for the mean wind speed of 10m At The Height, U _zfor the mean wind speed at height Z place, Z is height number, and n is coefficient, just can effectively list beam wind aweather compose by above formula.

As a kind of embodiment improved, described vertical wind spectrum comprises:

Kaimail composes: $\frac{{\mathrm{nS}}_u(n,z)}{{u_{*}}^2}=\frac{2f_z}{{(1+5.3f_z)}^{5/3}};$

Panofsky composes: $\frac{{\mathrm{nS}}_u(n,z)}{{u_{*}}^2}=\frac{6f_z}{{(1+4f_z)}^{5/3}};$

Lumley composes: $\frac{{\mathrm{nS}}_u(n,z)}{{u_{*}}^2}=\frac{3.36f_z}{{(1+10f_z)}^{5/3}};$

In formula, S _u(n, z) is wind spectrum, U _*represent friction velocity, u ₁₀for the mean wind speed of 10m At The Height, U _zfor the mean wind speed at height Z place, Z is height number, and n is coefficient, just effectively can list vertical wind spectrum by above formula.

In sum, analytical approach of the present invention, the characterisitic parameter of conventional wind field and Typhoon Wind Field just effectively can be calculated by step one, just can effectively collect and arrange the field data of typhoon by step 2, and then the near-earth wind characteristic of typhoon just effectively can be calculated by step 3, the characterisitic parameter of typhoon and conventional wind wind field just effectively can be carried out one and effectively contrast by the setting finally by step 4, so just difference between the two effectively can be analyzed, just the electric force pole tower with Anti-Typhoon performance can be effectively built out by analysis.

The above is only the preferred embodiment of the present invention, protection scope of the present invention be not only confined to above-described embodiment, and all technical schemes belonged under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (10)

1. typhoon and a conventional wind wind field characterisitic parameter difference analysis method, is characterized in that: comprise the steps:

One, each characterisitic parameter of wind field is calculated;

Two, the field data of typhoon is compiled;

Three, the near-earth wind characteristic of typhoon is calculated;

Four, Typhoon Wind Field parameter above-mentioned steps one, two, three drawn and conventional wind Wind parameters in wind contrast.

2. typhoon according to claim 1 and conventional wind wind field characterisitic parameter difference analysis method, is characterized in that: above-mentioned steps one comprises the steps: again 1, calculates mean wind speed and wind angle, the wind angle of attack; 2, wind profile is calculated; 3, gust wind factor is calculated; 4, turbulivity is calculated; 5, pulsating wind spectrum is listed; 6, show that parameter draws the wind field characterisitic parameter of typhoon according to above-mentioned steps;

Above-mentioned steps two is the wind speed adopting anemometer tower to measure typhoon differing heights place near the ground, and analyzes observation tower periphery landforms;

Above-mentioned steps three is the near-earth wind characteristic obtaining typhoon by calculating the gust wind factor of typhoon and turbulivity.

3. typhoon according to claim 2 and conventional wind wind field characterisitic parameter difference analysis method, it is characterized in that: the mean wind speed in above-mentioned steps 1 comprises horizontal mean wind speed and vertical mean wind speed, wherein, the average wind velocity U of level is drawn by following formulae discovery with vertical mean wind speed W:

$U=\sqrt{\stackrel{\‾}{u{\left(t\right)}^2}+\stackrel{\‾}{v{\left(t\right)}^2}};$ $W=\stackrel{\‾}{w\left(t\right)};$

In above-mentioned formula, U is horizontal mean wind speed, and u (t) is east wind speed upwards, and v (t) is north wind speed upwards, and W is vertical mean wind speed, and w (t) is the wind speed in vertical direction;

Wind angle θ in above-mentioned steps one is drawn by following formulae discovery;

$\mathrm{\β}={\mathrm{tg}}^{-1}(\stackrel{\‾}{v\left(t\right)}/\stackrel{\‾}{u\left(t\right)});$

θ=270-β, when time, southwester to;

θ=90-β, when time, northeaster to;

θ=270+ β, when time, northwester to;

θ=90+ β, when time, southeaster to;

In formula, t is averaging time, and β is intermediate angle;

The wind angle of attack in above-mentioned steps one is the angle between mean wind speed and surface level, when wind speed vertical component straight up time, the wind angle of attack is just, otherwise is negative.

4. typhoon according to claim 3 and conventional wind wind field characterisitic parameter difference analysis method, is characterized in that: the wind profile in above-mentioned steps 2 is drawn by following formulae discovery:

$\frac{u\left(z\right)}{u\left(z_0\right)}={\left(\frac{z}{z_0}\right)}^{\∂};$

In formula, u (z) represents the wind speed at terrain clearance z place; U (z ₀) represent terrain clearance z ₀the wind speed at place; Wherein z and z here ₀represent height value, α represents wind profile coefficient.

5. typhoon according to claim 4 and conventional wind wind field characterisitic parameter difference analysis method, is characterized in that: the gust wind factor in above-mentioned steps 3 is drawn by following formulae discovery:

$G_N=\frac{max\left({\stackrel{\‾}{U}}_{3s}\right)}{U};$

In formula, G _nfor gust wind factor, for the maximal value apart from mean wind speed when maximum instantaneous power is all 3s in 10min top, U is mean wind speed.

6. typhoon according to claim 5 and conventional wind wind field characterisitic parameter difference analysis method, is characterized in that: the turbulivity in above-mentioned steps 4 is drawn by following formulae discovery:

$I_i=\frac{{\mathrm{\σ}}_i}{U},(i=u,v,w);$

σ in formula _u, σ _vand σ _wrepresent that down wind, horizontal beam wind are to the root variance with vertical fluctuating wind speed u (t), v (t) and w (t) respectively; I _u, I _vand I _wbe respectively down wind, horizontal beam wind to vertical turbulivity.

7. typhoon according to claim 6 and conventional wind wind field characterisitic parameter difference analysis method, is characterized in that: the pulsating wind spectrum in described step 5 comprises with the wind aweather spectrum, beam wind and aweather composes and vertical wind spectrum.

8. Anti-Typhoon electric force pole tower construction method according to claim 7, is characterized in that: described with the wind aweather composing comprises:

Simiu composes: $\frac{{\mathrm{nS}}_u(n,z)}{{u_{*}}^2}=\frac{200f_z}{{(1+50f_z)}^{5/3}};$

Kaimail composes: $\frac{{\mathrm{nS}}_u(n,z)}{{u_{*}}^2}=\frac{150f_z}{{(1+33f_z)}^{5/3}};$

Davenport composes: $\frac{{\mathrm{nS}}_u(n,z)}{{u_{*}}^2}=\frac{4f^2}{{(1+f^2)}^{4/3}};$

Harris composes: $\frac{{\mathrm{nS}}_u(n,z)}{{u_{*}}^2}=\frac{4{f_z}^2}{{(1+{f_z}^2)}^{5/6}};$

In formula, S _u(n, z) is wind spectrum, U _*represent friction velocity, u ₁₀for the mean wind speed of 10m At The Height, U _zfor the mean wind speed at height Z place, Z is height number, and n is coefficient.

9. typhoon according to claim 7 and conventional wind wind field characterisitic parameter difference analysis method, is characterized in that: described beam wind is aweather composed and comprised:

Simiu composes: $\frac{{\mathrm{nS}}_u(n,z)}{{u_{*}}^2}=\frac{15f_z}{{(1+9.5f_z)}^{5/3}};$

Kaimail composes: $\frac{{\mathrm{nS}}_u(n,z)}{{u_{*}}^2}=\frac{17f_z}{{(1+9.5f_z)}^{5/3}};$

In formula, S _u(n, z) is wind spectrum, U _*represent friction velocity, u ₁₀for the mean wind speed of 10m At The Height, U _zfor the mean wind speed at height Z place, Z is height number, and n is coefficient.

10. typhoon according to claim 7 and conventional wind wind field characterisitic parameter difference analysis method, is characterized in that: described vertical wind spectrum comprises:

Kaimail composes: $\frac{{\mathrm{nS}}_u(n,z)}{{u_{*}}^2}=\frac{2f_z}{{(1+5.3f_z)}^{5/3}};$

Panofsky composes: $\frac{{\mathrm{nS}}_u(n,z)}{{u_{*}}^2}=\frac{6f_z}{{(1+4f_z)}^{5/3}};$

Lumley composes: $\frac{{\mathrm{nS}}_u(n,z)}{{u_{*}}^2}=\frac{3.36f_z}{{(1+10f_z)}^{5/3}};$

In formula, S _u(n, z) is wind spectrum, U _*represent friction velocity, u ₁₀for the mean wind speed of 10m At The Height, U _zfor the mean wind speed at height Z place, Z is height number, and n is coefficient.