Free molecular flow
id:
free-molecular-flow-163-7083894
title:
Free molecular flow
text:
Free molecular flow describes the fluid dynamics of gas where the mean free path of the molecules is larger than the size of the chamber or of the object under test. For tubes/objects of the size of several cm, this means pressures well below 10−3 mbar. This is also called the regime of high vacuum, or even ultra-high vacuum. This is opposed to viscous flow encountered at higher pressures. The presence of free molecular flow can be calculated, at least in estimation, with the Knudsen number (Kn)
brand slug:
wiki
category slug:
encyclopedia
description:
Gas flow with a relatively large mean free molecular path
original url:
https://en.wikipedia.org/wiki/Free_molecular_flow
date created:
2007-10-21T18:48:44Z
date modified:
2024-08-28T09:07:45Z
main entity:
{"identifier":"Q654637","url":"https://www.wikidata.org/entity/Q654637"}
image:
fields total:
13
integrity:
15