Lecture 11 Kelvin's circulation theorem. Invariance of vortex sheets, tubes and lines. Lecture 13 Vorticity equation in the case of incompresible 2D flow. The case of radially symmetric stream function. Lecture 14 Stress force in general circumstances.
Conservation of momentum requires linear dependence of the stress force on the director vector.
Conservation of angular momentum leads to the fact that the stress tensor is symmetric. Lecture 15 Newtonian liquids. Linear dependence of the stress tensor on the deformation tensor. Isotropic and deviatoric parts of the stress tensor. General form of the stress tensor.