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

aja1345 · October 13, 2016, 14:06

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?

aja1345 · October 13, 2016, 14:23

Another question:

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

October 13, 2016, 14:06	What is reason of low axial velocity at tip and hub of an axial turbine?	#1
aja1345 Senior Member Aja Join Date: Nov 2013 Posts: 496 Rep Power: 14	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? Last edited by aja1345; October 19, 2016 at 16:47.

October 13, 2016, 14:23		#2
aja1345 Senior Member Aja Join Date: Nov 2013 Posts: 496 Rep Power: 14	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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