One-Dimensional Fluid Mechanics/Kinetics Modeling of the CVD of SiC in a Vertical Reactor

1989 ◽  
pp. 42-42
Author(s):  
M. E. Aluko ◽  
C. Mbeledogu
Keyword(s):  
Fluid Mechanics ◽  
One Dimensional ◽  
Kinetics Modeling

Optimized one-dimensional fluid mechanics model for laser cleaning up space debris

2016 ◽  
Vol 45 (s1) ◽  
pp. 129002
Author(s):  
朱 殷 Zhu Yin ◽  
陈 浩 Chen Hao ◽  
徐 融 Xu Rong ◽  
赵 飞 Zhao Fei
Keyword(s):  
Fluid Mechanics ◽  
Space Debris ◽  
Laser Cleaning ◽  
One Dimensional ◽  
Mechanics Model ◽  
Fluid Mechanics Model

scholarly journals A Turbulent Mixture Theory for the Atmospheric Mixture of Snow and Air

1983 ◽  
Vol 4 ◽  
pp. 37-41 ◽  
Author(s):  
Rand Decker ◽  
R. L. Brown
Keyword(s):  
Turbulent Flow ◽  
Fluid Mechanics ◽  
Particle Velocity ◽  
Equations Of Motion ◽  
Mixture Theory ◽  
Continuum Theory ◽  
Blowing Snow ◽  
One Dimensional ◽  
Order Of Magnitude ◽  
Snow Particle

A theory based on classical fluid mechanics for an incompressible, chemically non-reacting, atmospheric mixture of air and entrained snow particles is derived. These continuum equations of motion are then expanded to include turbulent flow. The reduced, one-dimensional equations of this theory are further refined by order-of-magnitude analysis and correlation of the turbulent terms to mean flou parameters. The resulting one-dimensional, turbulent equations of motion for the snow contain apparent turbulent forces which enhance entrainment of snow where gradients of the air flow are high. These turbulent equations of motion are then solved numerically for snow particle velocity and concentration as a function of height above the surface. The results are similar to observed profiles of snow concentration and the superposition of the solution of this turbulent mixture theory for snow entrainment with an appropriate solution for the saltation layer will eventually lead to a working continuum theory for blowing snow.

Fluid Mechanics of Distillation Trays (I): Depth-Averaged Theory and One-Dimensional Flows

1995 ◽  
Vol 30 (7-9) ◽  
pp. 1219-1231 ◽  
Author(s):  
Fred K. Wohlhuter ◽  
Osman A. Basaran ◽  
George M. Harriott
Keyword(s):  
Fluid Mechanics ◽  
One Dimensional

Fluid mechanics of the cochlea. Part 1

1972 ◽  
Vol 51 (3) ◽  
pp. 497-512 ◽  
Author(s):  
M. B. Lesser ◽  
D. A. Berkley
Keyword(s):  
Fluid Mechanics ◽  
Potential Flow ◽  
Analytical Study ◽  
Nonlinear Effects ◽  
Two Dimensional ◽  
One Dimensional ◽  
Flow Models ◽  
Place Theory ◽  
Mechanical Models ◽  
Potential Flow Model

The physiology of the cochlea (part of the inner ear) is briefly examined in conjunction with a description of the ‘place’ theory of hearing. The role played fluid motions is seen to be of importance, and some attempts to bring fluid mechanics into a theory of hearing are reviewed. Following some general fluid-mechanical considerations a potential flow model of the cochlea is examined in some detail. A basic difference between this and previous investigations is that here we treat anenclosedtwo-dimensional cavity as opposed to one-dimensional and open two-dimensional models studied earlier. Also the two time-scale aspect of the problem, as a possible explanation for nonlinear effects in hearing, has not previously been considered. Thus observations on mechanical models indicate that potential flow models are applicable for times of the same scale as the frequency of the driving acoustic inputs. For larger time scales mechanical models show streaming motions which dominate the qualitative flow picture. The analytical study of these effects is left for a future paper.

scholarly journals A Turbulent Mixture Theory for the Atmospheric Mixture of Snow and Air

1983 ◽  
Vol 4 ◽  
pp. 37-41 ◽  
Author(s):  
Rand Decker ◽  
R. L. Brown
Keyword(s):  
Turbulent Flow ◽  
Fluid Mechanics ◽  
Particle Velocity ◽  
Equations Of Motion ◽  
Mixture Theory ◽  
Continuum Theory ◽  
Blowing Snow ◽  
One Dimensional ◽  
Order Of Magnitude ◽  
Snow Particle

A theory based on classical fluid mechanics for an incompressible, chemically non-reacting, atmospheric mixture of air and entrained snow particles is derived. These continuum equations of motion are then expanded to include turbulent flow. The reduced, one-dimensional equations of this theory are further refined by order-of-magnitude analysis and correlation of the turbulent terms to mean flou parameters. The resulting one-dimensional, turbulent equations of motion for the snow contain apparent turbulent forces which enhance entrainment of snow where gradients of the air flow are high. These turbulent equations of motion are then solved numerically for snow particle velocity and concentration as a function of height above the surface. The results are similar to observed profiles of snow concentration and the superposition of the solution of this turbulent mixture theory for snow entrainment with an appropriate solution for the saltation layer will eventually lead to a working continuum theory for blowing snow.

scholarly journals A mass-transportation approach to a one dimensional fluid mechanics model with nonlocal velocity

2012 ◽  
Vol 231 (1) ◽  
pp. 306-327 ◽  
Author(s):  
José A. Carrillo ◽  
Lucas C.F. Ferreira ◽  
Juliana C. Precioso
Keyword(s):  
Fluid Mechanics ◽  
Mass Transportation ◽  
One Dimensional ◽  
Mechanics Model ◽  
Fluid Mechanics Model

A one-dimensional self-gravitating stellar gas

1966 ◽  
Vol 25 ◽  
pp. 46-48 ◽  
Author(s):  
M. Lecar
Keyword(s):  
Gravitational Field ◽  
Phase Space ◽  
Motion Picture ◽  
Space Distribution ◽  
Two Dimensional ◽  
One Dimensional ◽  
Phase Space Distribution ◽  
Dimensional Phase Space ◽  
The Mean

“Dynamical mixing”, i.e. relaxation of a stellar phase space distribution through interaction with the mean gravitational field, is numerically investigated for a one-dimensional self-gravitating stellar gas. Qualitative results are presented in the form of a motion picture of the flow of phase points (representing homogeneous slabs of stars) in two-dimensional phase space.

Electron-Mirror Microscopic Aspects of Ferroelectric Domains of BaTiO3 And Ca2Sr (C2H5CO2)6

1970 ◽  
Vol 28 ◽  
pp. 478-479
Author(s):  
Teruo Someya ◽  
Jinzo Kobayashi
Keyword(s):  
Surface Layer ◽  
Electric Fields ◽  
Quantitative Study ◽  
Recent Progress ◽  
Ferroelectric Domain ◽  
Resolving Power ◽  
Surface Pattern ◽  
Crystal Surfaces ◽  
One Dimensional ◽  
Ferroelectric Domains

Recent progress in the electron-mirror microscopy (EMM), e.g., an improvement of its resolving power together with an increase of the magnification makes it useful for investigating the ferroelectric domain physics. English has recently observed the domain texture in the surface layer of BaTiO3. The present authors ) have developed a theory by which one can evaluate small one-dimensional electric fields and/or topographic step heights in the crystal surfaces from their EMM pictures. This theory was applied to a quantitative study of the surface pattern of BaTiO3).

Structure and function of neural networks in the retina

1988 ◽  
Vol 46 ◽  
pp. 26-27
Author(s):  
Peter Sterling
Keyword(s):  
Ganglion Cells ◽  
Three Dimensional ◽  
Structure And Function ◽  
Synaptic Connections ◽  
Visual Axis ◽  
One Dimensional ◽  
Cat Retina ◽  
Ultrathin Sections ◽  
And Function ◽  
Insight Into

The synaptic connections in cat retina that link photoreceptors to ganglion cells have been analyzed quantitatively. Our approach has been to prepare serial, ultrathin sections and photograph en montage at low magnification (˜2000X) in the electron microscope. Six series, 100-300 sections long, have been prepared over the last decade. They derive from different cats but always from the same region of retina, about one degree from the center of the visual axis. The material has been analyzed by reconstructing adjacent neurons in each array and then identifying systematically the synaptic connections between arrays. Most reconstructions were done manually by tracing the outlines of processes in successive sections onto acetate sheets aligned on a cartoonist's jig. The tracings were then digitized, stacked by computer, and printed with the hidden lines removed. The results have provided rather than the usual one-dimensional account of pathways, a three-dimensional account of circuits. From this has emerged insight into the functional architecture.

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