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Automatic post processing of Transient simulation |
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June 24, 2005, 05:47 |
Automatic post processing of Transient simulation
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#1 |
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Hello
I have been trying to do some post processing calculation for my transient simulation. I have done this per hand very often but now i want it to be automatic so that i can use it for optimization process. My query is: I want to calculate the total energy at the inlet and outlet of the nozzle which is time dependent. I used to write density, pressure and velocity at the inlet and outlet by exporting the values from chart in CFX-Post and than in Excel i did further calculation to find the nozzle efficiency in transient flow. Any one know how can you use command editor in CFX-Post to store and calculate the sum of energy over time. Just for reference the equations are like that: Efficiency = Numerator / Denomenator Numerator = Sum((Pressure * Velocity * Area)@outlet*DeltaT)+Sum((0.5*density*Area*Velocit y^3)@outlet Denomerator = should be same as Numerator but calcualted for inlet thanks Aziz |
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June 24, 2005, 13:34 |
Re: Automatic post processing of Transient simulat
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#2 |
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Hi,
Can't you do that with CEL expressions? What does Sum mean? Summation over the area, or over the time?What does DeltaT mean? Does T stand dor time or for temperature? Rui |
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June 24, 2005, 15:37 |
Re: Automatic post processing of Transient simulat
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#3 |
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Refer to CEL user manual and then use PERL language for the programming syntax under command editor. It's pretty simple (I only spend one week to learn PERL and I can automate basically anything in Post now). There're quite some free references about PERL programming on Google.
Cheers. |
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