Wind tunnel test device and use method
A wind tunnel test, wind tunnel technology, applied in the direction of measurement device, aerodynamic test, machine/structural component test, etc., can solve the problem of increasing the cost and difficulty of test time, consuming a lot of manpower and material resources, and test wind field interference and other problems, to save the test preparation time, improve the accuracy and regularity, and reduce the difficulty and cost of the test operation.
Pending Publication Date: 2019-09-13
NANJING UNIV
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Problems solved by technology
The first type of test technology needs to rely on experience to select the type of tracer particles, the location of tracer particles, and has high requirements for cameras that capture the path of tracer particles. The control of the entire test process requires professional operating standards. Therefore, it is very important for architectural design and urban For those in the professional field of planning, it is very difficult to operate, and it takes a lot of manpower and material resources to complete a test; the second single-point test technology usually needs to be used in conjunction with the instrument test frame. In the test wind tunnel model When the wind speed and wind pressure are at the walking height, the probe and the instrument stand need to be very close to the ground surface, about 5mm, which will interfere with the test wind field and affect the test results
In addition, urban pedestrian height wind environment tests usually require multi-point test results to form a complete data field. This process requires constant replacement of probe positions in wind tunnel tests, which increases the time cost and difficulty of the test.
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[0040] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0041] like figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 and Image 6 , a kind of wind tunnel test device of the present invention, comprises: chassis 1, the annular bracket 7 and the annular rail groove 9 that are set with the center of chassis 1 as the center of circle, the annular bracket 7 comprises the top layer and the same shape that are arranged in parallel up and down. The bottom layer is provided with at least four columns 21 between the top layer and the bottom layer to form a hollow structure, which is conducive to the passage of the conduit 19; the top layer of the ring bracket 7 is fixed on the back side of the chassis 1 by an anti-slip rubber ring 15, and the ring bracket 7 The bottom layer is placed in the annular rail groove 9, and the bottom of the annular rail groove 9 is pasted with a flexib...
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The invention discloses a wind tunnel test device and a use method. The wind tunnel test device comprises a chassis, an annular support arranged with the center of the chassis as a center of a circle,and an annular track, wherein the annular support comprises a top layer and a bottom layer that are arranged in parallel up and down and have identical shape, at least four uprights are arranged between the top layer and the bottom layer so as to form a hollow structure, the top layer of the annular support is fixed on the back of the chassis through an anti-slide rubber ring, the bottom layer ofthe annular support is put in the annular track, a flexible gasket is fixed at the bottom of the annular track and the annular track is put on the wind tunnel ground. In the device, a probe hole is reserved in the chassis, so that the drilling step in test is saved, the structure is simple, and wind field data of a specific point at any level near the ground can be obtained conveniently; the support is designed to build an overhead layer for placing a duct, so as to ensure that the test is conducted smoothly; the device is convenient to operate, makes operation of the test less difficult, reduces cost of a single test, and improves accuracy in test data collection.
Description
technical field [0001] The invention relates to a wind tunnel test device and a use method thereof, in particular to a wind tunnel test device and a use method for urban pedestrian level wind field testing. Background technique [0002] With the acceleration of urbanization, changes in urban space have led to a series of urban microclimate problems. By studying the characteristics of the wind field at the height of urban pedestrians, we can understand the coupling mechanism between the urban wind environment and urban space, and thus contribute to the construction and planning design. To improve the quality of the wind environment at pedestrian heights and improve the urban microclimate. Therefore, it is an important link to solve the problems related to urban outdoor ventilation to study the characteristics of wind field at pedestrian height in cities. [0003] At present, the methods used in urban pedestrian height wind field testing mainly include field testing, computat...
Claims
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IPC IPC(8): G01M9/08G01M9/02G01M9/06
CPCG01M9/08G01M9/02G01M9/062
Inventor李娟彭云龙季惠敏尤伟唐莲丁沃沃
OwnerNANJING UNIV