Urban building windward side density calculation method and system based on grid parallelism

Abstract

The embodiment of the invention discloses an urban building windward side density calculation method and system based on grid parallelism. The method comprises: acquiring a three-dimensional data setA and a wind direction angle theta of a to-be-detected building area; traversing each building in the data set A to obtain a direction coordinate extreme value corresponding to the data set A; determining a coordinate origin, a termination point and the side length of the grid unit, dividing a task space grid N, and endowing the task space grid N with an independent grid unit number NID; segmenting the data set A based on the task space grid N to obtain a data set B; grouping the buildings in the data set B and starting sub-tasks to calculate the windward side density of the buildings in eachgroup; and integrating the sub-task calculation results to form and output a final output data set NC. The problems that a traditional calculation method is small in data throughput and low in calculation efficiency are solved, and the method is suitable for assisting design planning of large cities, extra-large cities and urban group air ducts.

Description

technical field [0001] The invention relates to the technical field of urban planning, in particular to a method and system for calculating the density of the windward surface of urban buildings based on grid parallelism. Background technique [0002] There is a very complex interaction between urban thermal climate and buildings, and the unique underlying surface of urban buildings is an important reason for the formation of urban climate. In-depth exploration of the interaction between buildings and urban thermal climate is of great significance for improving the problems exposed in the current urban and built environments and building sustainable cities and built environments. There are two commonly used research methods. One is to use the fluid dynamics simulation method to simulate the air in the city by using aerodynamic equations according to the structures, shapes, layouts, materials, and characteristics of obstacles, streets, buildings or building groups. Flow fiel...

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Problems solved by technology

The above two methods require a large number of iterative calculations during the operation process, resulting in low operating efficiency. Facing the analysis of wind environment problems at the urban agglomeration level, it is difficult to meet the needs of time-consuming calculations.

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