On Monday, May 29, 2017 at 5:37:34 PM UTC-4, wrote:
On Monday, May 29, 2017 at 5:13:41 PM UTC-4, wrote:
On Monday, May 29, 2017 at 3:34:50 PM UTC-4, wrote:
sw

Right. So what is the condition inside of one involute in the second stage? Is it completely full when it's operating?

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Ed Huntress


It is exactly the same as the first stage.

Dan

And what is that condition? Are the involutes completely filled? And, if so, how is that possible unless the velocity is the same from the input port to the periphery of the wheel?

--
Ed Huntress

First some centrifugal pumps do not have involutes.

Second are you thinking there could be air in the pump? THa woud be bad as you would have cavitation.

The pump would be completely filled. How could it not be completely filled? And why would the velocity have to be the same from input port to the periphery?

The flow would be the same, but the passages vary in cross section, so there is no way the velocity could be the same.

Dan