課程介紹:
Drag on a circular cylinder
- A Wind-tunnel ( speed-variable )
- One cylinder with a wall-mounted pressure tap
- A Prandtl-tube ( Pitot-static tube)
- A manometer
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Thermal anemometry
- A Hot-wire anemometer
- A Hot-wire calibrator (TSI, model 1125) with a compressed air source
- An oscilloscope
- A multimeter
- An U-tube manometer
- A diaphragm manometer
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Air jet flows ( circular and planar )
- An axisymmetric vertical jet ( Nozzle diameter = 5 mm )
- An two-dimensional vertical jet ( Exit area = 1 mm x 60 mm )
- A pitot tube for field velocity measurements
- A force plate assembly
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Dynamic Similarity
Objectives:
After completion of this experiment and perform the analyses required, you should acquire the following skills:
- Understand the basics of pipe flow, pressure distribution along a pipe, and velocity profile at the pipe exit;
- Measure pressure via water manometer and pitot static probe (to calculate velocity);
- Perform analysis using the Moody diagram;
- Fundamentals of the Buckingham Pi Theorem and dimensionless analysis;
- Uncertainly analysis.
Experimental apparatus:
- A blower fan
- Pipes
- A pitot-static probe
- A water manometer
- Laptop computer (bring your own)