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Using waveform function as flow velocity

Posted 2021年11月22日 GMT-5 09:16 Fluid & Heat, Computational Fluid Dynamics (CFD) 1 Reply

Hinne van der Zant
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Hi everyone,

I am trying to define a cyclic (tidal) flow as my velocity for a turbulent flow model. I have created a waveform function, but when I define the average velocity at the inlet and as initial condition as wv1(t[1/s]), I get the error message that t is an undefined variable. My question is how I can make this work; do I need to define a variable for time (and if so, how?), or is my use of the wavefunction simply incorrect?

Thanks in advance.

With kind regards, Hinne

1 Reply Last Post 2021年11月22日 GMT-5 10:20
Jeff Hiller COMSOL Employee

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Posted: 3 years ago 2021年11月22日 GMT-5 10:20

My guess is that you have not set up your model as time-dependent. When you do, t is time.

Jeff

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Jeff Hiller
My guess is that you have not set up your model as time-dependent. When you do, t is time. Jeff

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