Device and method for measuring surface static pressure and wind pressure coefficient of building model in wind tunnel

Abstract

The invention discloses an apparatus used for wind tunnel measurement building model surface static pressure and a wind pressure coefficient and a method thereof and belongs to the building technology field. A wind tunnel is included. An external portion of the wind tunnel is provided with a first Dwyer manometer used for measuring a reference height dynamic pressure value and a second Dwyer manometer used for measuring a static pressure value of a building surface test point relative to a reference height respectively. The first Dwyer manometer is connected to a first pitot tube. A total pressure tube of the first pitot tube passes through a floor of the wind tunnel and is extended to the reference height. A static pressure tube of the first pitot tube is connected to the first Dwyer manometer through an air tube. The second Dwyer manometer is connected to a static pressure tube of the second pitot tube through the air tube. A total pressure tube of the second pitot tube passes through the floor of the wind tunnel and is extended to the reference height. The Dwyer manometer is connected to a static pressure test tube whose tail end is in a ''V'' shape through the air tube. In the invention, a building model can be made into a solid building model; measurable building types are enriched, especially such as a residence type or a ventilation test of a building with a low budget.

Description

technical field [0001] The invention relates to the field of refrigeration devices, in particular to a device and method for measuring the surface static pressure and wind pressure coefficient of a building model in a wind tunnel. Background technique [0002] The wind pressure coefficient is an indispensable data for research, prediction and calculation of natural ventilation in buildings. When traditionally used to measure static pressure and wind pressure coefficient, the building model must be hollow, and the building model needs to have enough internal space to accommodate a large number of metal pipe plugs and plastic hoses connecting it to the manometer. Such a building model Due to the large size, only a limited number of architectural models can be placed in a limited wind tunnel test area, and the limited number of architectural models cannot reflect the influence of the surrounding buildings and base environment on the wind pressure coefficient, which leads to ina...

AI Technical Summary

Problems solved by technology

When traditionally used to measure static pressure and wind pressure coefficient, the building model must be hollow, and the building model needs to have enough internal space to accommodate a large number of metal pipe plugs and plastic hoses connecting it to the manometer. Such a building model The size is large, and only a limited number of architectural models can be placed in a limited wind tunnel test work area. The limited number of architectural models cannot reflect the influence of the surrounding buildings and base environment on the wind pressure coefficient, which leads to inaccurate measurement results , cannot be used to test urban planning projects and large-scale development projects

[0003] The building model used in the traditional method of measuring static pressure and wind pressure coefficient is expensive, and the wind tunnel measurement is expensive, so it is not suitable for ventilation testing and research like residential or low-budget buildings

Images