Viscous Flow and Turbulence

Contents: Derivation and discussion of the basic equations in viscous fluid mechanics. Molecular background for viscosity and heat conductivity. Couette flow with heat conductivity and compressibility, Stokes 1. problem, Hiemenz problem for stagnation flow. The boundary layer approximation. Similarity solutions; Blasius and Falkner-Skan solutions, free shear layers and jets. Qualitative description of turbulence. Mean field description; Reynolds decomposition, Reynolds equations and mechanical energy. Turbulence modelling, eguilibrium models. Two-point closure. Turbulent boundary layers and shear layers.

This subject aims at building competence in formulating and solving fluid mechanics problems where viscosity and turbulence are of importance.

Lectures and written exercizes. The lectures and exercises may be in English when students who do not speak Norwegian take the course. If there is a re-sit examination, the examination form may be changed from written to oral.