Question #601679 on Yade changed:
https://answers.launchpad.net/yade/+question/601679
Status: Open => Answered
Robert Caulk proposed the following answer:
Hey Deng,
This is a duplicate thread, this question belongs in the thread we were
working in before [1] since the content has not changed.
Why did you remove the while loop? Without it, your pressure will not
change with time. Here is the code I recommended from the other thread:
Set up scene
Set up flow with flow.waveAction = True
A = some amplitude
avg = some average
time = some time
t = 0
while t < time:
t = O.dt*O.iter
scale = np.sin(t/time)
flow.sineMagnitude = A*scale
flow.sineAverage = avg*scale
flow.updateTriangulation = True
O.run(some steps)
w.r.t spatial variation, waveAction does this with sineMagnitude and
sineAverage. The pressure at one end of the specimen is sineAverage-
sineMagnitude and the pressure at the other end is
sineAverage+sineMagnitude. waveAction uses 30 intervals along the
specimen to interpolate the pressures between the ends according to your
description of the sine wave.
[1]https://answers.launchpad.net/yade/+question/593653
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