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<div style="direction:ltr"><font size="2"><font style="color:rgb(0,0,0)">Hi Neks</font>
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<div style="color:rgb(0,0,0)"><font size="2">We try to simulate a homogeneous shear flow with shear-periodic boundary conditions. In x and z direction, the boundary conditions are periodic. But in y direction, the boundary conditions are </font></div>
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<div style="color:rgb(0,0,0)"><font size="2">f(x, L, z) = f(x - S*t*L, 0, z) </font></div>
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<div><font size="2"><font size="2"><font size="2">where f(x,y,z) is any field, S is the shear rate and L is the domain size in y. How could we implement these boundary conditions? </font></font>(In the moment, we specify Dirichlet boundary conditions at y =
0 and y = L and interpolate the fields with the spectral interpolation routine.)</font></div>
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<div><font size="2">Thank you for your support. </font></div>
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<div style="color:rgb(0,0,0)"><font size="2">Best, Philipp </font></div>
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