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How to create Sinusoidal perturbation for only a certain timesteps ?

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January 29, 2015, 05:50	How to create Sinusoidal perturbation for only a certain timesteps ?	#1
nanavati Member Pratik Nanavati Join Date: May 2014 Location: Munich, Germany Posts: 40 Rep Power: 12	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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