Development and construction of a small-scale wind tunnel

Mohd Nazri, Muhammad Nazhiim (2020) Development and construction of a small-scale wind tunnel. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

The aim of this study is to develop and construct a small-scale wind tunnel for research and education purpose. Buying the wind tunnel might be a simpler solution but it is very costly. Thus, fabricating one in-house is a better solution. The study was started with several stages such as development and designing stages, flow analyses and fabrication processes. It is important to note that, the focus of this study is to present the appropriate stages in developing and constructing a small- scale wind tunnel. Specifically, the small-scale wind tunnel has a test section with size of 100 mm (height) x 100 mm (width). For a blown-type wind tunnel, the flow velocity in the wind tunnel depends on the blower performance. In this study, the air flow inside the test section should be less than 40 m/s (or Mach number is below 0.4), based on the 3.0 kW High Pressure Ring Blower that has been used as the incoming flow sources~ Every main component of the wind tunnel such as nozzle, diffuser and test section were designed using CA TIA V 5R21 based on some calculation as suggested in the past literature. The file from CA TIA was exported to CFD Fluent software to conduct further analysis on the flow development in the test section prior to the fabrication processes. The material of the wind tunnel was carefully selected to ease in-house fabrication and flow visualization studies in the future. Future improvement on the wind tunnel characterization and flow validation have been suggested at the end of this report

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