Hello, I would like to introduce the function of coordinates that at the initial time step is given by class f(UserExpression): def eval(self, values, x): if x[0] > 0.5: values[0] = 1.0 else: values[0] = 0.0 i.e. the theta-function in x-direction .Then each new time step I want f(x, t+dt) =…

Updating function of coordinates each time step

dokken July 7, 2022, 3:41pm 2

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