Boundary condition
 

Dear all

In this post, i want to start general guides for the boundary conditions which imposed at mainly at viscous or inviscid flows.
It will better to talk for variables (r:density, p:pressure , velocities) and not for titles of boundaries (inlet, outflow and others).

Especially, at navier stokes equations (viscous) the boundaries play important role and doent exist any theory as inviscid flows for BC imposing.