Modeling of the angular distribution of the emitted molecular flux from a cylindrical nozzle in a free molecular flow

2018 ◽  
Vol 26 (12) ◽  
pp. 708-723
Author(s):  
Do‐hun Kim ◽  
Myung‐sun Lee ◽  
Jeong‐il Moon ◽  
Heui‐jae Pahk
Keyword(s):  
Angular Distribution ◽  
Molecular Flow ◽  
Free Molecular Flow ◽  
Cylindrical Nozzle ◽  
Molecular Flux

THE INFLUENCE OF SURFACE ROUGHNESS ON SCATTERING OF FREE-MOLECULAR FLOW BY SOLID BODIES

2016 ◽  
Vol 47 (4) ◽  
pp. 367-388 ◽  
Author(s):  
Alexander Ivanovich Erofeev ◽  
Alexander Petrovich Nikiforov ◽  
Sergei Borisovich Nesterov ◽  
Ramul'ya Amirovna Nezhmetdinova
Keyword(s):  
Surface Roughness ◽  
Molecular Flow ◽  
Free Molecular Flow ◽  
Solid Bodies

Study of drag molecular dynamics in the range of free-molecular flow.

Shinku ◽  
1990 ◽  
Vol 33 (3) ◽  
pp. 98-100
Author(s):  
N. LIU ◽  
S. J. PANG
Keyword(s):  
Molecular Dynamics ◽  
Molecular Flow ◽  
Free Molecular Flow

scholarly journals Gas Damping in Capacitive MEMS Transducers in the Free Molecular Flow Regime

Sensors ◽  
2021 ◽  
Vol 21 (7) ◽  
pp. 2566
Author(s):  
Boris A. Boom ◽  
Alessandro Bertolini ◽  
Eric Hennes ◽  
Johannes F. J. van den Brand
Keyword(s):  
Flow Regime ◽  
Gas Diffusion ◽  
Diffusion Time ◽  
Molecular Flow ◽  
Free Molecular Flow ◽  
Simple Analytical Model ◽  
Gas Damping ◽  
Wide Range ◽  
Capacitive Mems ◽  
Insight Into

We present a novel analysis of gas damping in capacitive MEMS transducers that is based on a simple analytical model, assisted by Monte-Carlo simulations performed in Molflow+ to obtain an estimate for the geometry dependent gas diffusion time. This combination provides results with minimal computational expense and through freely available software, as well as insight into how the gas damping depends on the transducer geometry in the molecular flow regime. The results can be used to predict damping for arbitrary gas mixtures. The analysis was verified by experimental results for both air and helium atmospheres and matches these data to within 15% over a wide range of pressures.

Drag on an Object in Nearly-Free Molecular Flow

1964 ◽  
Vol 7 (8) ◽  
pp. 1262 ◽  
Author(s):  
Marian H. Rose
Keyword(s):  
Molecular Flow ◽  
Free Molecular Flow

Forces on convex bodies in free molecular flow

AIAA Journal ◽  
1975 ◽  
Vol 13 (11) ◽  
pp. 1454-1459 ◽  
Author(s):  
J. Pike
Keyword(s):  
Convex Bodies ◽  
Molecular Flow ◽  
Free Molecular Flow

scholarly journals Photophoresis on particles hotter/colder than the ambient gas in the free molecular flow

2016 ◽  
Vol 97 ◽  
pp. 22-33 ◽  
Author(s):  
C. Loesche ◽  
G. Wurm ◽  
T. Jankowski ◽  
M. Kuepper
Keyword(s):  
Molecular Flow ◽  
Free Molecular Flow ◽  
Ambient Gas
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