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Add traction operators that include the viscous terms and use them to clean up the imposition of traction BC.
author Martin Almquist <malmquist@stanford.edu>
date Sat, 25 Jul 2020 15:56:31 -0700
parents f6ada1719420
children
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function u = ifour(u_hat)
    u_hat = ifftshift(u_hat);
    u = ifft(u_hat);
end