Results 21 to 30 of about 236,922 (302)

Is the mean free path the mean of a distribution? [PDF]

open access: yesAmerican Journal of Physics, 2014
We bring attention to the fact that Maxwell's mean free path for a dilute hard-sphere gas in thermal equilibrium, (2σn)−1, which is ordinarily obtained by multiplying the average speed by the average time between collisions, is also the statistical mean of the distribution of free path lengths in such a gas.
openaire   +2 more sources

Effective mean free path and viscosity of confined gases [PDF]

open access: yes, 2019
The molecular mean free path (MFP) of gases in confined geometries is numerically evaluated by means of the direct simulation Monte Carlo method and molecular dynamics simulations.
Duncan A. Lockerby   +13 more
core   +1 more source

Investigation of Molecular Mean Free Path, Molecular Kinetic Energy, and Molecular Polarity Affecting Knudsen Diffusivity along Pore Channels

open access: yesSeparations, 2022
The effective purification of corrosive gases at the cathode air stream side is essential for proton exchange membrane fuel cells’ performance in real-world applications. Gas molecular diffusion depth along the pore channel is a sufficient parameter that
Bin Xu, Haotian Qin, Lu Chen
doaj   +1 more source

Collision frequency and mean free path for plasmas described by kappa distributions

open access: yesAIP Advances, 2019
The paper shows the surprising result of the universality of the mean-free-path formulation for plasmas described by kappa distributions. In particular, the ratio of the mean-free-path over the Debye length depends only on the Debye number – the number ...
G. Livadiotis
doaj   +1 more source

Opinion: Influence of the mean free path of air on atmospheric particle growth [PDF]

open access: yesAerosol Research
Recent studies by Tsalikis et al. (2023, 2024) predicted that the mean free path of air (λair) could be significantly smaller than widely used values by a factor of ∼ 2.
R. Cai, M. Kulmala
doaj   +1 more source

Analysis of Sound Field Distribution in Architecturally Diverse Temples

open access: yesArchives of Acoustics, 2021
The results of the research, which aimed to analyze the acoustic properties of selected sacred buildings located in the city of Czestochowa, Poland are presented in the paper.
Paweł BŁASZCZAK   +2 more
doaj   +1 more source

The effect of system boundaries on the mean free path for confined gases

open access: yesAIP Advances, 2013
The mean free path of rarefied gases is accurately determined using Molecular Dynamics simulations. The simulations are carried out on isothermal argon gas (Lennard-Jones fluid) over a range of rarefaction levels under various confinements (unbounded gas,
Sooraj K. Prabha   +3 more
doaj   +1 more source

Neutrino mean free path in neutron stars [PDF]

open access: yesPhysical Review C, 2003
7 pages, 5 figures, RevTeX ...
Shen, Chao   +3 more
openaire   +5 more sources

Life before mean free path [PDF]

open access: yes, 1999
A coherently amplifying medium containing dense random weak scatterers can exhibit mirror-less lasing beyond a threshold of optical pumping even when the active medium has linear dimensions much smaller than the estimated transport mean free path.
Kumar, N.
core   +1 more source

The importance of mean free path in determining gas flow behaviour

open access: yes, 2010
We investigate whether a power-law form of probability distribution function better describes the free paths of dilute gas molecules in a confined system.
Dongari, Nishanth   +5 more
core   +1 more source

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