Forces on the top of a bullet train

Thread starter cbram
Start date Jun 6, 2015
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Bullet Forces Train

AI Thread Summary

The discussion centers on the air resistance experienced by a bullet train at top speed, specifically focusing on skin friction on the roof surface. Participants express uncertainty about the relevance of calculating drag for just the roof, suggesting that a comprehensive analysis would be more beneficial. There is an invitation for further exploration of the topic, indicating a willingness to assist in solving the problem if calculations are attempted. Overall, the conversation emphasizes the complexity of drag forces and the importance of considering various factors in the analysis. Understanding these forces is crucial for optimizing bullet train design and performance.

Jun 6, 2015

cbram

Can anyone tell me what is the air resistance on the top of a bullet train when it is moving at top speed

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Jun 6, 2015

billy_joule

Homework Helper

There will be skin friction on the roof surface of the train:

http://en.wikipedia.org/wiki/Parasitic_drag#Skin_friction

Is that what you are interested in? I can't see the use of calculating drag for the roof alone... Though, If you make an attempt we can help you solve the problem.

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