vaihtolinta
Vaihtolinta is a concept in fluid dynamics that describes the macroscopic process of fluid exchange between two systems or reservoirs, where one region of fluid flows into another and the process of fluid flow is not continuous or smooth. It is a periodic or cyclic phenomenon, where the rate of fluid exchange depends on the pressure difference between the two reservoirs.
Vaihtolinta is characterized by the existence of nonlinear relationships between the driving forces of fluid flow,
In terms of process control, vaihtolinta is often considered a type of instability that violates ordinary on/off
In many instances, the flow regime of vaihtolinta can be described by the double-diffusion solution, which is