This process is known as Knudsen flow or Knudsen diffusion.
2.
Movements of fluids in situations with a high Knudsen number are said to exhibit Knudsen flow.
3.
His name is associated with the Knudsen flow, Knudsen diffusion, Knudsen number, Knudsen layer and Knudsen gases.
4.
A flow of gas through a pipe is called Knudsen flow when it can be expressed as the difference of two independent flows, which enter the pipe through its different ends.