CFD of gas Turbine blade

Ali Raza Abid · September 12, 2011, 15:16

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, 15:21

Quote:

Originally Posted by Ali Raza Abid

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, 15:34

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, 16:24

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

check reply no 5 with real results in pdf file

Far · September 12, 2011, 16:32

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, 16:36

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, 16:49

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

outlet
static pressure

sabin · September 13, 2011, 02:55

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, 14:56

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.

September 12, 2011, 15:16	CFD of gas Turbine blade	#1
Ali Raza Abid New Member Ali Raza Join Date: Sep 2011 Posts: 6 Rep Power: 15	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? yasin.kb likes this.

September 12, 2011, 15:34	CFD of gas Turbine Blade	#3
Ali Raza Abid New Member Ali Raza Join Date: Sep 2011 Posts: 6 Rep Power: 15	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?

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September 12, 2011, 16:24		#4
Far Senior Member Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,558 Blog Entries: 6 Rep Power: 54	http://www.cfd-online.com/Forums/cfx...machinery.html check reply no 5 with real results in pdf file

September 12, 2011, 16:32		#5
Far Senior Member Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,558 Blog Entries: 6 Rep Power: 54	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

September 12, 2011, 16:36		#6
Ali Raza Abid New Member Ali Raza Join Date: Sep 2011 Posts: 6 Rep Power: 15	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

September 12, 2011, 16:49		#7
Far Senior Member Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,558 Blog Entries: 6 Rep Power: 54	inlet the total pressure total temprature flow angle (from NGV) outlet static pressure

September 13, 2011, 02:55		#8
sabin New Member sabin mathew Join Date: Sep 2011 Location: Mumbai Posts: 18 Rep Power: 15	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

September 14, 2011, 14:56		#9
Ali Raza Abid New Member Ali Raza Join Date: Sep 2011 Posts: 6 Rep Power: 15	ok i will periodic boundary conditions kindly guide me what initial conditions and solvers i should use in FLUENT V 6.4?

February 18, 2012, 06:04		#10
jaganraj New Member JAGAN RAJ Join Date: Feb 2012 Location: chennai Posts: 1 Rep Power: 0	hi, i need a coordinates to study the analysis process for turbine blades. please give me the link to get them.