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how can i get axail turbine performance in cfx-pos

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Old   June 24, 2008, 07:26
Default how can i get axail turbine performance in cfx-pos
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dia aisa
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dear all plaese how can i get performance of axial turbine in CFX-post. i used macro calculater in cfx-post. but the results is not write.is there any different method to calculate the eff , power, torqou or any variable from cfx-post
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Old   June 24, 2008, 08:15
Default Re: how can i get axail turbine performance in cfx
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amine
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hi first have you well set the information for the boundaries and parameters in the macro calculater ,and click calculate ,and view report,it should be so easy in this way!!! you can also use the turbo mode ,you have to initialise the components (initialise all components),click twice on rotor part and definbe all component and click initialise and calculate velocity components.you would fine all what you need in quantitative panel

i hope that it was helpfull
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Old   June 24, 2008, 23:30
Default Re: how can i get axail turbine performance in cfx
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Amit Roghs
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Input Power = ((Total Pressure in Stn Frame at Inlet)-(Total Pressure in Stn Frame at Outlet))*Discharge

Output Power = Torque on Runner Blades *2*pi*N/60

Efficiency = Output Power/Input Power

Each of the above terms in each power are need to be calculated using Function Calculator. Torque is also available in the function library.

In the option go to massflowavgabs and then calculate Total Pressure in Stn Frame for inlet as well as outlet.

Regards

Amit Roghs

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Old   June 27, 2008, 07:56
Default Re: how can i get axail turbine performance in cfx
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Kumar
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Good one by amit.

In pre you prepare thse expressions. define monitor points in output control for these eqns. This will show their convergence in solver manager while running.and u can plot their output in Excel,also analyse them in post.

Kumar.
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