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What is reason of low axial velocity at tip and hub of an axial turbine?

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Old   October 13, 2016, 14:06
Default What is reason of low axial velocity at tip and hub of an axial turbine?
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Aja
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Hi, I am analyzing results of my turbine simulation. I have created one line from hub to casing at downstream of the flow...please see the following figures. I want to investigate along this line how the axial velocity changes. In one of my results, my new blade(in last Figure or blue line in last figure) has the axial velocity than to base blade() at hub and tip. (Please see attachment.) What does this mean? I think that this is due to low separation in downstream of flow of new blade(VT). Am I right?



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Old   October 13, 2016, 14:23
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Another question:

According to the following picture, Is axial velocity equal to velocity in my case?

Last edited by aja1345; October 16, 2016 at 02:36.
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