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Numerical simulation method for simulating wind field of complex terrain

A complex terrain, numerical simulation technology, applied in the field of analysis and measurement, can solve problems such as the inconsistency between the measured results and the test results

Active Publication Date: 2018-11-06
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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Problems solved by technology

[0005] The invention provides a numerical simulation method for simulating the wind field of complex terrain, which solves the technical problem that the existing method for simulating the influence of rough regions on the flow field does not match the actual measurement results with the test results

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  • Numerical simulation method for simulating wind field of complex terrain
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  • Numerical simulation method for simulating wind field of complex terrain

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Embodiment Construction

[0041] The embodiment of the present invention provides a numerical simulation method for simulating a wind field with complex terrain, which solves the technical problem that the actual measurement results do not match the test results in the existing methods for simulating the influence of rough areas on the flow field.

[0042] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0043] see fi...

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Abstract

The invention discloses a numerical simulation method for simulating a wind field of a complex terrain. Parametric modeling is achieved; an actual terrain CFD model is built, and terrain roughness length data are processed through a UDF; a series of random points distributed on a contour line are converted into regular ground vegetation height data; then a relationship between the vegetation height and a resistance coefficient of a wind field is fitted through a function, and resistance coefficients at different vegetation heights of the complex terrain are obtained; and finally, the wind field of the simulated complex terrain is calculated and obtained by using Fluent to compile and execute a UDF program. The numerical simulation method for simulating the wind field of the complex terrainprovided by the invention solves the technical problem that an existing influence method for simulating a rough area convection field has an actual measurement result inconsistent with a test result.

Description

technical field [0001] The invention relates to the technical field of analysis and measurement, in particular to a numerical simulation method and system for simulating a wind field with complex terrain. Background technique [0002] Predicting turbulent flow fields over micro-topography is important in many engineering applications, such as structural safety, agricultural wind damage, aviation safety, etc. It also plays an important role in mapping wind energy distribution over complex terrain, which determines the location of wind turbines. Wind resources are abundant in some mountainous areas, but the wind speed distribution is complex, so it is very important to accurately predict the wind speed and turbulence intensity of complex terrain. In my country, mountainous areas are mostly covered with vegetation or villages and towns. If it is necessary to accurately predict the distribution of wind energy over mountainous areas, it is first necessary to find a method to simu...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 罗啸宇谢文平肖凯聂铭雷旭姚博
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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