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 Ali Raza Abid September 12, 2011 14:16

I want to do CFD analysis of a Gas Turbine blade on FLUENT software the known parameters are
Inlet Temp. = 900 C
Inlet Velocity = 700 m/s
Mass flow rate of air = 450 ton/hr
Inlet pressure = 8 bar
Outlet temp. = 600 C
outlet Pressure = 3 bar
I have generated the Grid in GRIDGEN software
Kindly guide me what boundary conditions,inlet conditions and solvers etc i should use to solve my case?

 Ali Raza Abid September 12, 2011 14:21

Quote:
 Originally Posted by Ali Raza Abid (Post 323804) I want to do CFD analysis of a Gas Turbine blade the known parameters are Inlet Temp. = 900 C Inlet Velocity = 700 m/s Mass flow rate of air = 450 ton/hr Inlet pressure = 8 bar Outlet temp. = 600 C outlet Pressure = 3 bar Kindly guide me what boundary conditions,inlet conditions and solvers etc i should use to solve my case?
CFD analysis of gas Turbine Blade

 Ali Raza Abid September 12, 2011 14:34

I want to do CFD analysis of a Gas Turbine blade on FLUENT software the known parameters are
Inlet Temp. = 900 C
Inlet Velocity = 700 m/s
Mass flow rate of air = 450 ton/hr
Inlet pressure = 8 bar
Outlet temp. = 600 C
outlet Pressure = 3 bar
I have generated the Grid in GRIDGEN software
Kindly guide me what boundary conditions,inlet conditions and solvers etc i should use to solve my case?

 Far September 12, 2011 15:24

http://www.cfd-online.com/Forums/cfx...machinery.html

check reply no 5 with real results in pdf file

 Far September 12, 2011 15:32

dont you have NGV with rotor blade? if no then you have to specify the angle at inlet (axial and tangential components with radial component = 0; specify the sign of axial and tangential components in accordance of right hand rule)

at inlet specify total pressure and total temperature and at outlet specify the mass flow outlet or corresponding static pressure (which produces the required mass flow rate)

give fluid the required rpm and specify axis direction as per right hand rule. choose x,y or z (with value 1 or -1) as your axis of rotation

keep the default conditions for hub and blade and for shroud : specify it as rotating wall with zero rpm in inertial reference frame

also use the periodic boundary condition for the planes (two identical planes with identical mesh) between adjacent blades

 Ali Raza Abid September 12, 2011 15:36

Actually i just want to do analysis of a single blade then what conditions i should use? please clear me sorry for inconvenience i m a bit new in CFD

 Far September 12, 2011 15:49

inlet
the total pressure
total temprature
flow angle (from NGV)

outlet
static pressure

 sabin September 13, 2011 01:55

Since you want to do analysis of single blade, first thing you have to do is control volume creation for single blade. I.e separate out your blade from other blades in the problem.

2nd thing will be boundary condition specification. You can specify inlet and outlet according to what you know. Since you are doing single blade analysis common surfaces of blades should be specified as 'periodic boundary condition'. Hope it is clear to you.

All the best :)
Sabin Mathew

 Ali Raza Abid September 14, 2011 13:56

ok i will periodic boundary conditions kindly guide me what initial conditions and solvers i should use in FLUENT V 6.4?

 jaganraj February 18, 2012 06:04

hi,

i need a coordinates to study the analysis process for turbine blades. please give me the link to get them.

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