Method for improving accuracy rate of meteorological environment numerical simulation

A meteorological environment and numerical simulation technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problem of failure to consider the dynamic constraint relationship, the inability to accurately consider the physical quantity conservation constraint relationship, and the failure to establish a dynamic relationship And other issues

Inactive Publication Date: 2012-06-27
PLA UNIV OF SCI & TECH
View PDF0 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods basically design the effective roughness calculation method based on the geometric characteristics of the underlying surface, and fail to consider the dynamic constraints of the atmospheric boundary layer used in the calculation of the exchange between the ground and the air by the meteorological numerical model, and the effective zero plane There is no reason...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for improving accuracy rate of meteorological environment numerical simulation
  • Method for improving accuracy rate of meteorological environment numerical simulation
  • Method for improving accuracy rate of meteorological environment numerical simulation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0072] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0073] The present invention comprises the following steps:

[0074] Ground friction causes strong turbulent movement in the atmospheric boundary layer, and turbulent movement causes the vertical transport of physical quantities in the surface layer below 100m from the ground to maintain a constant value, which is the so-called constant flux layer. On top of the type, the usual flux layer exists. In the case of constant flux, Monin and Obukhov deduced that the near-surface atmospheric physical quantities are distributed in a logarithmic profile in the vertical direction, and this logarithmic profile law of the near-surface physical quantities holds true in all places on the earth, and the shapes of the profiles in different regions are similar. T...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for improving the accuracy rate of meteorological environment numerical simulation. The method comprises the following steps of: enabling the turbulent flux calculated by using the roughness and the effective null plane displacement in a meteorological environment numerical model net region to be equal to the sum of the turbulent fluxes calculated by using each underlying surface earth service type in the numerical model net region, obtaining a formula (11); enabling the total air mass calculated by using the roughness and the effective null plane displacement in the numerical model net region to be equal to the weighted sum of the air mass calculated by using each underlying surface earth service type in the numerical model net region, obtaining a formula (12), and obtaining an original functional form (13) from the formula (12) by integration; resolving the effective roughness and the effective null plane displacement of the non-uniform earth surface in the numerical model net region, importing an atmosphere initial field and a lateral boundary forcing field into the meteorological environment numerical model, and then, importing the sum into the numerical model to get the numerical simulation result. The method improves the accuracy rate of meteorological environment numerical simulation, and can be used in environmental assessment and wind power utilization.

Description

technical field [0001] The invention relates to a method for improving the calculation accuracy of the ground-air flux on an underlying surface under a meteorological environment numerical model, in particular to a method for improving the accuracy of the meteorological environment numerical simulation. Background technique [0002] The numerical model of the meteorological environment needs to give effective aerodynamic parameters such as the effective roughness of the underlying surface and the effective zero-plane displacement. Since the resolution of the numerical model cannot be increased without limit, each model grid may include a variety of surface type, and each model grid can only select one value for each aerodynamic parameter, that is, the effective aerodynamic parameters that can comprehensively consider different types of effects, that is, effective roughness and effective zero plane displacement. [0003] Internationally, since the 1980s, due to the need to co...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06F19/00
Inventor 钟中孙源张波卢伟宋帅张耀存杨玉震
Owner PLA UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap