Testing Bernoulli's Equation on a Moving Vehicle

AI Thread Summary
A funnel-shaped tube on a moving vehicle can demonstrate Bernoulli's equation, but factors like tube length and surface roughness may introduce losses. Surface roughness disrupts streamlined flow, leading to increased friction and energy loss. This friction acts as a force against the mass flow of air, impacting overall power. Measuring total pressure drop can quantify these losses when multiplied by the mass flow rate. Understanding these dynamics is crucial for accurate application of Bernoulli's principles in practical scenarios.
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if i keep a funnel shaped long tube on the roof of a moving vehicle, will the air going in follow Bernoulli's equation?
 
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Yes, though depending on the length and how rough it is you may have to consider losses too.
 
how could roughness cause losses? by disrupting streamlined flow?
 
Friction is a force, moving air over it is a mass flow, put them together and you get power. It is easy enough to measure the loss by measuring the drop in total pressure and multiplying by mass flow rate.
 

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