scholarly journals Particle pair dispersion and eddy diffusivity in a high-speed premixed flame

2020 ◽  
Author(s):  
Ryan Darragh ◽  
Colin A.Z. Towery ◽  
Alexei Y. Poludnenko ◽  
Peter E. Hamlington
Keyword(s):  
High Speed ◽  
Eddy Diffusivity ◽  
Premixed Flame ◽  
Particle Pair

High-Speed 4D Flame-Flow Measurements of a Bluff-Body Stabilized Premixed Flame

2020 ◽  
Author(s):  
Jonathan Reyes ◽  
Kareem A. Ahmed ◽  
Brynmor Davis ◽  
Darin A. Knaus ◽  
Daniel Micka
Keyword(s):  
High Speed ◽  
Bluff Body ◽  
Premixed Flame ◽  
Flow Measurements

Premixed flame propagating into a narrow channel at a high speed, part 1: Flame behaviors in the channel

1985 ◽  
Vol 60 (3) ◽  
pp. 245-255 ◽  
Author(s):  
Norimasa Iida ◽  
Osamu Kawaguchi ◽  
G.Takeshi Sato
Keyword(s):  
High Speed ◽  
Narrow Channel ◽  
Premixed Flame

Premixed flame ignition in high-speed flows over a backward facing step

2021 ◽  
Vol 229 ◽  
pp. 111398
Author(s):  
Paul Pouech ◽  
Florent Duchaine ◽  
Thierry Poinsot
Keyword(s):  
High Speed ◽  
Premixed Flame ◽  
Backward Facing Step ◽  
Flame Ignition ◽  
High Speed Flows

219 High-Speed and Magnifying Observations of Burning Processes of Micro PET Particles Frying Trough a Two-Dimensional Premixed Flame

2006 ◽  
Vol 2006.16 (0) ◽  
pp. 200-203
Author(s):  
Takanori TOMATSU ◽  
Yuki KATO ◽  
Ryuji YAMAKITA ◽  
Yojiro ISHINO ◽  
Norio OHIWA
Keyword(s):  
High Speed ◽  
Premixed Flame ◽  
Two Dimensional

High-Speed 4D Velocity and Flame Measurements of a Stabilized Premixed Flame

2019 ◽  
Author(s):  
Jonathan Reyes ◽  
Kareem A. Ahmed ◽  
Brynmor Davis ◽  
Darin Knaus ◽  
Daniel Micka
Keyword(s):  
High Speed ◽  
Premixed Flame

Propagation of Premixed Flame Kernels in High Speed Channel Flows with Moderate Turbulence

2015 ◽  
Author(s):  
Nathan R. Grady ◽  
Robert W. Pitz ◽  
Suresh Menon ◽  
Bradley A. Ochs ◽  
David E. Scarborough ◽  
...  
Keyword(s):  
High Speed ◽  
Channel Flows ◽  
Premixed Flame

Microfabrication research at the National Submicron Facility

1983 ◽  
Vol 41 ◽  
pp. 86-89
Author(s):  
E.D. Wolf
Keyword(s):  
Integrated Circuits ◽  
Particle Physics ◽  
High Speed ◽  
New Technology ◽  
High Energy ◽  
High Energy Particle ◽  
New Science ◽  
Wide Range ◽  
Intermediate Domain ◽  
Circuit Function

Most microelectronics devices and circuits operate faster, consume less power, execute more functions and cost less per circuit function when the feature-sizes internal to the devices and circuits are made smaller. This is part of the stimulus for the Very High-Speed Integrated Circuits (VHSIC) program. There is also a need for smaller, more sensitive sensors in a wide range of disciplines that includes electrochemistry, neurophysiology and ultra-high pressure solid state research. There is often fundamental new science (and sometimes new technology) to be revealed (and used) when a basic parameter such as size is extended to new dimensions, as is evident at the two extremes of smallness and largeness, high energy particle physics and cosmology, respectively. However, there is also a very important intermediate domain of size that spans from the diameter of a small cluster of atoms up to near one micrometer which may also have just as profound effects on society as “big” physics.

Vacuum System to Minimize the Specimen Contamination of High-Performance EM

1977 ◽  
Vol 35 ◽  
pp. 68-69
Author(s):  
N. Yoshimura ◽  
K. Shirota ◽  
T. Etoh
Keyword(s):  
Electron Microscope ◽  
High Speed ◽  
High Performance ◽  
High Vacuum ◽  
Vacuum System ◽  
Pump System ◽  
Pumping System ◽  
Diffusion Pump ◽  
Almost All ◽  
Cascade Type

One of the most important requirements for a high-performance EM, especially an analytical EM using a fine beam probe, is to prevent specimen contamination by providing a clean high vacuum in the vicinity of the specimen. However, in almost all commercial EMs, the pressure in the vicinity of the specimen under observation is usually more than ten times higher than the pressure measured at the punping line. The EM column inevitably requires the use of greased Viton O-rings for fine movement, and specimens and films need to be exchanged frequently and several attachments may also be exchanged. For these reasons, a high speed pumping system, as well as a clean vacuum system, is now required. A newly developed electron microscope, the JEM-100CX features clean high vacuum in the vicinity of the specimen, realized by the use of a CASCADE type diffusion pump system which has been essentially improved over its predeces- sorD employed on the JEM-100C.

The on-line use of histogram data for high-speed correction and alignment of electron microscope images

1984 ◽  
Vol 42 ◽  
pp. 556-557
Author(s):  
William Krakow
Keyword(s):  
Power Spectrum ◽  
High Speed ◽  
Direct Memory Access ◽  
Digital Television ◽  
Contrast Transfer Function ◽  
The Past ◽  
High Resolution Tem ◽  
On Line ◽  
Correction Of Astigmatism ◽  
The Fourier Transform

In the past few years on-line digital television frame store devices coupled to computers have been employed to attempt to measure the microscope parameters of defocus and astigmatism. The ultimate goal of such tasks is to fully adjust the operating parameters of the microscope and obtain an optimum image for viewing in terms of its information content. The initial approach to this problem, for high resolution TEM imaging, was to obtain the power spectrum from the Fourier transform of an image, find the contrast transfer function oscillation maxima, and subsequently correct the image. This technique requires a fast computer, a direct memory access device and even an array processor to accomplish these tasks on limited size arrays in a few seconds per image. It is not clear that the power spectrum could be used for more than defocus correction since the correction of astigmatism is a formidable problem of pattern recognition.

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