rarefied gas

rarefied gas

[′rer·ə‚fīd ′gas]
(fluid mechanics)
A gas whose pressure is much less than atmospheric pressure.
References in periodicals archive ?
Eight contributions present the fundamental governing equations of non-equilibrium fluid transport, the direct simulation Monte Carlo method for rarefied gas flow analysis, the computational chemistry approach to calculating the rates and cross sections in the quantized energy states, and radiative heat transfer as a non-equilibrium process.
They're probably the result of a galactic collision that rained material onto Fornax A's central black hole, triggering oppositely directed jets of high-energy particles that heat the rarefied gas of intergalactic space.
The molecular flow module offers the capability to simulate rarefied gas flow in complex CAB geometries of vacuum systems, including mass spectrometer, semiconductor processing, satellite technology, and particle accelerator applications.
Molecular Flow Module--This module offers users the capability to simulate rarefied gas flow in complex CAD geometries of vacuum systems.
Among their topics are the main equations and approaches to solutions of the problems in rarefied gas dynamics, modeling the flow of continuous media, determining the aerodynamical characteristics of the returnable space systems, and the general models describing turbulent flows.
International Symposium on Rarefied Gas Dynamics (24th: 2004: Monopoli (Bari), Italy) Ed.
Many years later, some of his last work created the science of rarefied gas dynamics.
Mesoscopic Simulation of Rarefied Gas Flow in Porous Media
201, Rarefied Gas Dynamics Lab, Iitm, Chennai -600 036.
According to the preface, the English translation follows the current German edition except for chapter five, "Analytical and Numerical Calculations of Rarefied Gas Flows," which will not appear in German until the tenth edition comes out.
In general, any compressor mechanism can be operated as a vacuum pump by simply shifting the conditions into a rarefied gas domain.