Brinkman swimming sheet
= Brinkman swimming sheet
{c}
A small transverse <Taylor swimming sheet> in a Brinkman medium obeys $(\nabla^2-A^2)\nabla^2\psi=0$ with $A=\alpha/k$. Its no-slip material <velocity> is imposed on the moving sheet. The matrix's preferred frame and the mean <force-free> condition must be included when finding the second-order swimming speed.