wrong efficiency-axial compressor rotor 37

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 December 1, 2012, 09:39 wrong efficiency-axial compressor rotor 37 #1 New Member   sajad Join Date: Aug 2010 Posts: 17 Rep Power: 10 Hello I'm doing Fine turbo v8c tutorial number1. it's about axial compressor rotor 37. I'm doing exactly like it says in the tutorial the polytropic efficiency for this case is 88.9% but when i solve it i get value 85.225%! what is the problem? please help me

July 19, 2014, 07:13
#2
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yujiabeizi
Join Date: May 2012
Posts: 8
Rep Power: 8
Quote:
 Originally Posted by sajad Hello I'm doing Fine turbo v8c tutorial number1. it's about axial compressor rotor 37. I'm doing exactly like it says in the tutorial the polytropic efficiency for this case is 88.9% but when i solve it i get value 85.225%! what is the problem? please help me

November 6, 2016, 22:54
#3
Member

Join Date: Dec 2013
Posts: 47
Rep Power: 6
Quote:
 Originally Posted by sajad Hello I'm doing Fine turbo v8c tutorial number1. it's about axial compressor rotor 37. I'm doing exactly like it says in the tutorial the polytropic efficiency for this case is 88.9% but when i solve it i get value 85.225%! what is the problem? please help me
I also encounter the same problem!

 November 19, 2016, 04:32 #4 Senior Member   Hamid Zoka Join Date: Nov 2009 Posts: 232 Rep Power: 12 Hi; Regarding this problem some points should be considered: - Air properties should be carefully checked. - Position of inlet and outlet boundaries as well as hub and shroud geometries should be checked. - Mesh distributions, turbulence model used, blade RPM and direction of rotation should be checked. - Spanwise distributions of boundary conditions can also have an impact on the efficiency. So, this needs to be checked. - Blade tip clearance should be checked. regards colinda1 likes this.

 Tags axial compressor rotor 37, efficiency

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