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Large/Multipurpose/Visualization Wind Tunnels

Large/Multipurpose/Visualization Wind Tunnels

Three types of wind tunnels can accommodate a variety of research objects on wind with specific requirements.

Features

Large Boundary-Layer Wind Tunnel

Its size, width 4.5m * height 2.5m for dimensions of the working section, sufficiently allows for the modeling of vast area required for test of large-area regional development. This wind tunnel is used for the investigation of wind effects on super high-rise buildings and large-span structures ,making the best use of the large working section. In addition to structures, its applications are also for the investigation of wind flow affected by the change in land shapes for vast area. Careful considerations are made on measurement: it's equipped with a temperature control device that keeps the temperature of air flow constant, corner vanes with silencers that reduced the wind noise at the working section, etc..

Multipurpose Boundary-Layer Wind Tunnel

This wind tunnel, width 2.5m * height 2.0m for dimensions of the working section, is used for investigation on the wind effect that acts upon ordinary buildings. As its naming indicates, its wide range of applications include investigation on local wind environment around buildings, wind loads on claddings, wind-induced vibration of structures, etc.. Examinations on the wind-induced noise in and around buildings adopting corner vanes with silencers, and testing that utilizes the maximum wind speed of 50m/s are also available.

Visualization Wind Tunnel

In order to clarify the complicated nature of flow around structures, this wind tunnel is devised in a variety of ways to visualized the flow which normally cannot be seen. By emitting the smoke or the micro powders in the windward of the model and irradiate the laser-light sheet upon them, the air flow can be observed at an arbitrary section. The use of digital image processing to analyze flow visualization images from photographs or video frames in order to obtain the velocity and direction of wind around structures is also available.

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Examples of Experiment

Large Boundary/Multipurpose Boundary Layer Wind Tunnel

Multi point wind pressure measurements

Multi point wind pressure measurements

Multi point wind velocity measurements

Multi point wind velocity measurements

Wind force measurements

Wind force measurements

Measurements of wind cutting sound

Measurements of wind cutting sound

Visualization Wind Tunnel

Circumstance of PIV experiment

Circumstance of PIV experiment

Result due to smoke wire method (Parallel cylinder)

Result due to smoke wire method (Parallel cylinder)

Result due to PIV experiment (Bridge girder)

Result due to PIV experiment (Bridge girder)

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