flued mechanics The inclined manometer at Fluid Dynamic laboratory at E5 has broken. You are tasked to design a new inclined manometer as shown in Figure 1. The design task is to decide what is the proper manometric fluid to be used, angle of inclination (θ), and the length of the vertical (L1) and inclined (L2) leg of the manometer. Since the manometer is mainly used together with Pitot-Static tube to measure air velocity it needs to be sensitive to a small pressure difference which in the range of 5 to 50 Pa. It should be notice that the manometer should fit in a compartment which has 15 cm-height and 80 cm-length. The inclination angle should be at least 5°. The temperature in the lab is around 27 °C to 37 °C. The manometric fluid should fulfil the following criteria: The fluid should have a low vapour pressure (A liquid with high vapour pressure would be less sensitive to changes in pressure)
flued
The inclined manometer at Fluid Dynamic laboratory at E5 has broken. You are tasked to design a new inclined manometer as shown in Figure 1.
The design task is to decide what is the proper manometric fluid to be used, angle of inclination (θ), and the length of the vertical (L1) and inclined (L2) leg of the manometer. Since the manometer is mainly used together with Pitot-Static tube to measure air velocity it needs to be sensitive to a small pressure difference which in the range of 5 to 50 Pa. It should be notice that the manometer should fit in a compartment which has 15 cm-height and 80 cm-length. The inclination angle should be at least 5°. The temperature in the lab is around 27 °C to 37 °C.
The manometric fluid should fulfil the following criteria:
- The fluid should have a low vapour pressure (A liquid with high vapour pressure would be less sensitive to changes in pressure)
- The fluid should have low surface tension to avoid the capillary rise.
- High boiling point (the liquid should not easily vaporize at temperature where the manometer is operating.
In your design report, it should contain
- Justification of your choice of design such as why you choose certain manometric fluid over the other, and why you choose certain angle as well as the other design parameters,
- Theoretical derivation for the involved parameters in designing the manometer, and
- Iterative calculation in designing the manometer.
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