rarefied gas

rarefied gas

[′rer·ə‚fīd ′gas]
(fluid mechanics)
A gas whose pressure is much less than atmospheric pressure.
References in periodicals archive ?
In such mediums, collisions between a molecule and wall dominate over intermolecule collisions, which causes each molecule to act independently and control the gas properties [3], a condition often referred as rarefied gas flow.
Another impact factor of shale formation is that gas in shale nanopores is dense gas rather than rarefied gas [32].
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.
As shown in Figures 4-6, rarefaction occurs periodically near the high-temperature peak, and the density of the rarefied gas plasma decreases over a period of [PHI]/2.
Address : Nccrd Office, No.201, Rarefied Gas Dynamics Lab, Iitm, Chennai - 36
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.
Matsumoto, "Dynamic molecular collision (DMC) model for rarefied gas flow simulations by the DSMC method," Physics of Fluids, vol.
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.