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2d - simulation - cylindrical - symmetry condition? |
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Senior Member
qutadah
Join Date: Jun 2021
Location: USA
Posts: 101
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hello everyone,
I am simulating a 2d flow in a cylindrical tube using python, how will i account for the symmetry along the z axis? I need a boundary condition, since I am only simulating half the tube, assuming n is my radial grid point, I am simulating from n=1 to Nr. Currently i only used this symmetry to calculated the derivatives at n=1 using central differencing using 2 grid spacings instead of one and then assuming symmetry of the grid point across the axis. so for example. dux/dx @ n1 = [ux(n=3) - ux(n=-1)]/(2*dx) and ux(n=-1) = ux(n=1). So the equation becomes: n1 = [ux(n=3) - ux(n=1)]/(2*dx) Is this reasonable? Please help. Thanks! Regards, Qutadah |
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Tags |
cylindrical, cylindrical coordinate, gradient, simulation, two-dimensional |
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