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How to create Sinusoidal perturbation for only a certain timesteps ?

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Old   January 29, 2015, 04:50
Question How to create Sinusoidal perturbation for only a certain timesteps ?
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Pratik Nanavati
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Dear Foamers,

I am new to swak4Foam, groovyBC and want to generate a Sinusoidal perturbation (or wave effect) for air flowing through pipe/duct for only few timestpes.

i.e. Fixed inlet velocity = 10 m/s
solver = pisoFoam or icoFoam
startTime = 0
endTime = 5 sec

and i want to generate sinusoidal perturbation between 2 to 3 seconds.

can anyone one guide me on this ?
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groovybc, perturbation, sinusoidal sea wave, swak4foam


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