Thanks for the link. I didn’t know about the paradox. I think it was a given (not my assumption) that this fluid is inviscid.
So the article says that there is no *drag* in our problem.
But it does not say that there is no lift.
Picturing a ceiling fan with non-zero pitch, I still see fluid...
I'm assuming you are correct. But I can't track with you. Here's where I am: The blades have an angle of attack. So there seems to be no way to rotate the fan without accelerating the fluid. That tells me it takes torque to turn the fan. Where did I go wrong?
So can you rotate the fan? If so: What happens when you rotate the fan? Does it require torque to rotate the fan? What does this fluid do when you rotate the fan?
Hi Charles Link,
I've been thinking about your posts.
What was your thought process?
How do you know you are right?
You say
And you also say
In setting up my question, I'm going to re-write these statements.
Please correct me if I've misunderstood you.
The statement of the problem...
Thank you Orodruin and Charles Link,
Orodruin, the book I took the problem from (Halliday & Resnick, 1966) says, in this context,
They are using ##\mu## for the number of moles.
This gives Cv dimensions ML2T-3 or as you say 'energy per temp per quantity of substance amount'.
So, I could not...