A Wake Calculation Method for Wind Engineering

Abstract

The invention discloses a wind engineering wake flow calculation method. The wind engineering wake flow calculation method is characterized by comprising the following steps of 1, calculating a wake flow expansion coefficient; 2, on the basis of the step 1, calculating the wind speed of wave flow under a Park model; 3, correcting the radius of the initial wave flow under the Park model; 4, on the basis of the steps 2 and 3, calculating the corrected Park model wave flow wind speed; 5, on the basis of the step 4, building a new wake flow model, and naming the new wake flow model as a Park-Gauss model; 6, calculating the wind speed of wake flow under the Park-Gauss model. The prediction precision of the wake flow is obviously improved through the corrected radius of the initial wake flow, the wind speed of the wake flow area can be well simulated, radial distribution better conforms to a real flow field while the precision is approximately consistent to that of a tested result, and meanwhile the wind engineering wake flow calculation method inherits the advantages of the simple form, easy encoding, efficient calculation and the like of an engineering model.

Description

technical field [0001] The invention relates to a calculation method, in particular to a wind engineering wake calculation method, and belongs to the field of wind power generation. Background technique [0002] As the shortage of non-renewable energy becomes increasingly acute, wind energy, which is sustainable and green and pollution-free in the future, will become one of the hot spots in the field of new energy. Wind farm site selection is an important task in the early stage of wind farm construction, and it plays an important role in later wind farm construction and benefit prediction. In the micro-site selection of large-scale wind farms, due to the limitations of current computing resources and capabilities, it will be very expensive to use the full CFD method to simulate and predict computing costs. In the field of wind power generation engineering, some engineering wake models with acceptable accuracy and simple form have strong practicability. Wake effects affect...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the deficiencies of the prior art, the purpose of the present invention is to provide a method for calculating the wake of wind engineering, thereby solving the problem that the prior art cannot completely avoid the problems of low precision, complicated form, difficult coding and inefficient calculation in the process of wake calculation. technical problem

Images