31 results about "Wind engineering" patented technology

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.

The invention discloses a wind creation device. The wind creation device comprises more than two electric potential output units, wherein different electric potential output units are arranged at a distance of 3,000-100,000 meters and are in potentials with opposite polarities. The device is mainly used in wind engineering, and is used for increasing precipitation and preventing forest fire.

The invention discloses a target track tracking calculation method of a wind-driven rain amount, and belongs to the technical field of wind engineering. The calculation method comprises the steps of on a given wind field incoming flow condition, solving a Reynolds average N-S equation to obtain a circle flow field of a building; according to an area to be calculated, establishing a virtual plane, and calculating a sample track end point of a sample track on the area to be calculated or the virtual plane; through a surrogate model method, and according to a sample track starting point and the sample track end point, establishing a function relation formula regarding the coordinate relation of a raindrop starting point and end point; given a raindrop track end point coordinate on the area to be calculated, calculating a raindrop track starting point coordinate; solving a raindrop motion equation to obtain an effective track, and according to the effective track, calculating collection rate distribution in the area to be calculated. According to the target track tracking calculation method of the wind-driven rain amount, accurate calculation of collection rates on the back face, lee side, the boundary and the corner point area of the building is achieved, and compared with an existing method, the needed raindrop track calculation amount is remarkably lowered.