Strømningsrør
Strømningsrør, or flow tubes, are conceptual lines used in fluid dynamics to visualize and analyze the motion of fluids. They are defined as lines that are instantaneously parallel to the velocity vector of the fluid at every point. Imagine a fluid moving; if you were to draw a line that perfectly traces the path of a fluid particle at a specific moment in time, that would be a strømningsrør.
The key characteristic of strømningsrør is that no fluid can cross them. This is because the fluid
In steady flow, where the velocity at any given point does not change with time, strømningsrør are
The concept of strømningsrør is fundamental in fields such as aerodynamics, hydraulics, and meteorology. By observing