A pre-processing method for green building environment simulation model

Abstract

The present invention discloses a green building environment simulation model pre-processing method, which belongs to the field of computer modeling technology. The present invention implements the green building environment simulation model pre-processing through three steps: establishing a sunshine analysis model, establishing a mathematical model, and construction simulation. By establishing a mathematical model, the present invention can allow field technicians to work according to the modified mathematical model, and then readjust and modify the re-mathematical model until the design requirements are met, and can guide the wind field model correction work by establishing a mathematical model. The present invention utilizes the KA-GO electromagnetic scattering model to accurately establish a target electromagnetic scattering model. The establishment of a standardized system for the green building wind environment simulation process of the present invention not only requires the division of labor and clear division of responsibilities for the simulation process; it also requires full process control of the simulation process, real-time grasp of the progress and correctness of the simulation, and reduction of unnecessary work duplication in the project.

Description

Technical Field

[0001] The invention belongs to the technical field of computer modeling, and in particular relates to a pre-processing method for a green building environment simulation model. Background Art

[0002] Green buildings, also known as sustainable buildings, minimize environmental impact and conserve resources throughout their lifecycle through innovative structural and operational design. This includes building site selection, design, construction, operation, maintenance, renovation, and demolition. With the rapid development of distributed energy and urbanization, the utilization of wind energy in urban building environments is gaining increasing attention in building wind environment simulation.

[0003] Currently, urban buildings are clustered together, with diverse shapes and layouts, and situated in diverse topographic environments. This increases wind resistance and reduces urban wind speeds. However, because the urban surface is rough, similar to complex mountainous terrain, streets and spaces between tall buildings act as wind vents in mountainous areas, significantly concentrating wind and creating localized strong winds in low-wind-speed areas. Simple models are often used to represent buildings, and they do not truly reflect the distribution of wind energy within the building complex. Summary of the Invention

[0004] The purpose of the present invention is to provide a green building environment simulation model pre-processing method that reduces wind resistance and can truly reflect the wind energy distribution within a building complex.

[0005] In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical solutions:

[0006] A green building environment simulation model pre-processing method includes the following steps:

[0007] 1) Establish a sunlight analysis model: obtain the building characteristic parameters of the building to be analyzed, import the meteorological condition parameters, and obtain the sunlight analysis model. Then, partition the sunlight analysis model and calculate the light intensity of each area.

[0008] 2) Establishing a mathematical model: Establishing a wind field mathematical model, establishing a local coordinate system with the mirror reflection point as the origin, establishing a KA-GO electromagnetic scattering model, and determining historical meteorological information under the wind field model;

[0009] 3) Construction simulation: Through modeling, the construction process is simulated, and then the data of the construction building is detected by detection equipment, the construction site is measured using a 3D laser scanner, and then at least one construction safety evaluation data is selected to obtain the simulated construction results of the green building model.

[0010] Furthermore, the characteristic parameters in step 1) are building height and length, building materials and building space coordinates.

[0011] Furthermore, in step 1), each area of the sunshine analysis model is sampled at an interval of Δt.

[0012] Furthermore, the meteorological parameters in step 1) include annual solar sunshine azimuth and altitude angle, sunshine time and sunshine intensity, and the calculation formula of the solar altitude angle is sinH=sinφsinδ+cosφcosδcost.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1) The green building environment simulation model of the present invention first establishes an analysis model for sunlight, divides it into different areas, and performs block analysis to obtain the best analysis model, which can ensure that the building is illuminated with the best light.

[0015] 2) By establishing a mathematical model, the present invention enables field technicians to work based on a revised mathematical model and then readjust and modify the revised mathematical model until the design requirements are met. This mathematical model can guide wind farm model correction work. The present invention utilizes the KA-GO electromagnetic scattering model to accurately establish a target electromagnetic scattering model.

[0016] 3) The establishment of a standardized system for the green building wind environment simulation process in this invention requires not only clear division of labor and responsibility within the simulation process, but also full control of the simulation process to ensure real-time monitoring of the simulation's progress and accuracy, thereby reducing unnecessary duplication of work. When Cu ≤ 4%, the former is the appropriate calculation area; when Cu > 4%, the latter is the appropriate calculation area. DETAILED DESCRIPTION

[0017] The embodiments of the present invention will be described in more detail below. However, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete and to fully convey the scope of the present invention to those skilled in the art. Those skilled in the art can derive alternative technical solutions from the following description without departing from the spirit and scope of the present invention.

[0018] Example

[0019] A green building environment simulation model pre-processing method includes the following steps:

[0020] 1) Establish a sunlight analysis model: Obtain the building characteristic parameters of the building to be analyzed and simultaneously import meteorological condition parameters to obtain a sunlight analysis model. The sunlight analysis model is then partitioned and the light intensity of each area is calculated. The characteristic parameters include building height and length, building materials, and building spatial coordinates. Each area of the sunlight analysis model is sampled at intervals of Δt. The meteorological parameters include the annual solar azimuth and altitude, sunshine duration, and sunshine intensity. The solar altitude angle is calculated using the formula sinH = sinφsinδ + cosφcosδcost.

[0021] Where H is the solar altitude, φ is the local geographic latitude, δ is the solar declination for the day, and t is the solar hour angle at that time. The solar hour angle (t) is calculated using the formula: t = 15 × (ST - 12), where ST is true solar time, which equals Beijing time + time difference, and time difference = (local longitude - 120°) / 15°. sinδ = 0.39795cos[0.98563(N - 173)], and N is the cumulative day, representing the sequential number of the year. For example, "1" represents January 1, and "365" or "366" represents December 31. The solar hour angle at noon is 0 degrees, and the solar hour angle at sunrise on the equinox is 90 degrees.

[0022] H is the solar altitude angle, and its calculation formula is

[0023] sinH=sinφsinδ+cosφcosδcost;

[0024] The sunshine analysis model uses partition interval Δt for sampling processing and detects the longitude and latitude coordinates of each detection area.

[0025] 2) Establish a mathematical model: A mathematical model of the wind field is established, and a local coordinate system is established with the specular reflection point as the origin. Once the local coordinate system of the green building is determined, the model can be effectively established and integrated with the physical entity. A KA-GO electromagnetic scattering model is established, and historical meteorological information under the wind field model is determined. The model in the sunshine analysis model is randomly partitioned and appropriately trained to predict the scattering field in the target area of the electromagnetic scene.

[0026] 3) Construction simulation: Through modeling, the construction process is simulated, and then the data of the construction building is detected by detection equipment, the construction site is measured using a 3D laser scanner, and then at least one construction safety evaluation data is selected to obtain the simulated construction results of the green building model.

[0027] Set the height of the target building to h, set the distance between the top of the area and the roof of the target building to 4h, 5h, 6h, and 7h respectively, the distance in the incoming flow direction to 5h, 6h, 7h, and 8h respectively, the distances on the left and right sides to the target building to 4h, 5h, 6h, and 7h respectively, and the length of the outflow boundary to 6h, 7h, 8h, and 9h respectively. The wind speed detection is carried out here as follows:

[0028]

[0029] Among them: U 6h -Calculate the average wind speed at a measuring point 5m around the target building when the distance between the outflow boundary of the calculation area and the target building is 6h;

[0030] U 7h -Calculate the average wind speed at a measuring point 5m around the target building when the distance between the outflow boundary of the calculation area and the target building is 7h.

[0031] When Cu≤4%, the former can be selected as a reasonable calculation area, and when Cu>4%, the latter can be selected as a reasonable calculation area.

[0032] The above description is only a specific implementation method of the present disclosure, but the protection scope of the embodiments of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes, replacements or combinations within the technical scope disclosed in the embodiments of the present disclosure or based on the ideas disclosed in the embodiments of the present disclosure, and they should all be covered by the protection scope of the embodiments of the present disclosure.

Claims

1. A green building environment simulation model pre-processing method, characterized by comprising the following steps: 1) Establish a sunlight analysis model: Obtain the building characteristic parameters of the building to be analyzed, import meteorological condition parameters, and obtain a sunlight analysis model. Then, partition the sunlight analysis model and calculate the light intensity of each area. 2) Establishing a mathematical model: Build a wind field mathematical model, establish a local coordinate system with the specular reflection point as the origin, and establish a KA-GO electromagnetic scattering model. Simultaneously, determine historical meteorological information under the wind field mathematical model, randomly divide the model in the sunshine analysis model, and perform appropriate training to predict the scattering field in the target area of the electromagnetic scene. 3) Construction simulation: Through modeling, the construction process is simulated, and then the construction data of the building is detected through detection equipment. The construction site is measured with a 3D laser scanner, and the wind speed is detected. Then, a reasonable calculation area is selected to obtain the simulated construction results of the green building model.

2. A green building environment simulation model pre-processing method according to claim 1, characterized in that The characteristic parameters in step 1) are building height and length, building materials, and building space coordinates.

3. A green building environment simulation model pre-processing method according to claim 1, characterized in that In step 1), each area of the sunshine analysis model is sampled at an interval of Δt.

4. A green building environment simulation model pre-processing method according to claim 1, characterized in that The meteorological parameters in step 1) include the annual solar azimuth and altitude angle, sunshine time and sunshine intensity. The solar altitude angle is calculated as follows: sinH = sinφsinδ + cosφcosδcost, where H is the solar altitude angle, φ is the local geographical latitude, δ is the solar declination of the day, and t is the solar hour angle at that time.

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