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Sloshing tank natural frequencies in Fluent

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Old   April 9, 2015, 09:33
Exclamation Sloshing tank natural frequencies in Fluent
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I want find sloshing frequencies of a rectangular tank half filled with water. I came to know that I have to do FFT in Fluent to get natural frequencies. But for that I need to input some time sequence data. What is that data ? (amplitude vs time ?). Should I need to perform transient analysis for getting that data? Where can I find "time sequence data" after performing transient analysis?
Can I perform any transient analysis or it should be only periodic? Is there any problem if I do analysis for constant acceleration in X direction.

Please, someone clear my doubts
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fluent 14, multi phase flow, natural frequency, sloshing, transient analysis

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