题目
BH40A1401 Fluid Mechanics I - Lähiopetus 8.1.2024-23.2.2024 Quiz 4
匹配题
Are the following devices used to measure flow velocity, or volumetric flow rate? 1: Hot wire anemometer ____ 2: Laser Doppler anemometer ____ 3: Vortex meter ____ 4: Rotameter ____ 5: Filling a vessel ____ 6: Pitot-pipe ____ 7: Venturi tube ____ 8: Particle Image Velocimetry (PIV) ____
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标准答案
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思路分析
Here is a step-by-step analysis of each item in the matching prompt, explaining why the stated classification for flow velocity vs volumetric flow rate is appropriate or not.
1) Hot wire anemometer ____ flow velocity
The hot wire anemometer measures the velocity of a fluid by detecting changes in heat transfer from a heated wire. The signal is proportional to the mean flow velocity of the fluid passing the sensor, not the total volume moved. Therefore, labeling it as measuring flow velocity is correct.
2) Laser Doppler Anemometer ____ flow velocity
A Laser Doppler Anemometer uses the Doppler shift of laser light scattered by seeded particles to determine the velocity of the fluid at a point or along a l......Login to view full explanation登录即可查看完整答案
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