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Что (кто) такое turbulent diffusion - определение
Найдено результатов: 182
Turbulent diffusion
Turbulent diffusion is the transport of mass, heat, or momentum within a system due to random and chaotic time dependent motions. It occurs when turbulent fluid systems reach critical conditions in response to shear flow, which results from a combination of steep concentration gradients, density gradients, and high velocities.
Druine Turbulent
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HOMEBUILT SPORTPLANE DESIGNED BY ROGER DRUINE
PFA Druine Turbulent; Druine D.31 Turbulent; Rollason Turbulent; Druine D-31 Turbulent; Druine D.3 Turbulent; Rollason D.31
The Druine D.31 Turbulent is a French single-seat ultralight Homebuilt aircraft designed by Roger Druine.
Diffusion bonding
![Animation of sheet forming process using diffusion welding (see also [[hydroforming]]).](https://commons.wikimedia.org/wiki/Special:FilePath/Output 9GbY2F.gif?width=200 "Animation of sheet forming process using diffusion welding (see also [[hydroforming]]).")
Diffusion bonding or diffusion welding is a solid-state welding technique used in metalworking, capable of joining similar and dissimilar metals. It operates on the principle of solid-state diffusion, wherein the atoms of two solid, metallic surfaces intersperse themselves over time.
Diffusion map
DIMENSIONAL REDUCTION ALGORITHM
Diffusion maps
Diffusion maps is a dimensionality reduction or feature extraction algorithm introduced by Coifman and Lafon which computes a family of embeddings of a data set into Euclidean space (often low-dimensional) whose coordinates can be computed from the eigenvectors and eigenvalues of a diffusion operator on the data. The Euclidean distance between points in the embedded space is equal to the "diffusion distance" between probability distributions centered at those points.
Reaction–diffusion system
TYPE OF MATHEMATICAL MODEL
Reaction diffusion; Reaction-diffusion equation; Reaction diffusion equation; Reaction diffusion system; Reaction-diffusion system; Reaction-diffusion model; Reaction diffusion model; Reaction-diffusion; Reaction–diffusion; Turing instability; Reaction–diffusion equations; Reaction–diffusion equation; Reaction-diffusion equations; Newell-Whitehead-Segel equation; Reaction-diffusion systems; Reaction–diffusion systems; Reaction Diffusion; Kolmogorov-Petrovsky-Piskounov equation; Reaction-diffusion mechanism; Gray–Scott model; Gray-Scott model; Zeldovich equation; Barkley model; Diffusion-driven instability; Newell–Whitehead–Segel equation
Reaction–diffusion systems are mathematical models which correspond to several physical phenomena. The most common is the change in space and time of the concentration of one or more chemical substances: local chemical reactions in which the substances are transformed into each other, and diffusion which causes the substances to spread out over a surface in space.
Anisotropic diffusion
IMAGE NOISE REDUCING TECHNIQUE
Anisotropic Diffusion; Anisotropic smoothing; Difusión Anisotrópica; Applications of anisotropic diffusion; Diffusion-based image processing
In image processing and computer vision, anisotropic diffusion, also called Perona–Malik diffusion, is a technique aiming at reducing image noise without removing significant parts of the image content, typically edges, lines or other details that are important for the interpretation of the image. Anisotropic diffusion resembles the process that creates a scale space, where an image generates a parameterized family of successively more and more blurred images based on a diffusion process.
Diffusion-limited aggregation
Diffusion-limited aggregation (DLA) is the process whereby particles undergoing a random walk due to Brownian motion cluster together to form aggregates of such particles. This theory, proposed by T.
turbulent
![tip vortex]] from an [[airplane]] wing passing through coloured smoke](https://commons.wikimedia.org/wiki/Special:FilePath/Airplane vortex edit.jpg?width=200 "tip vortex]] from an [[airplane]] wing passing through coloured smoke")
![laser-induced fluorescence]]. The jet exhibits a wide range of length scales, an important characteristic of turbulent flows.](https://commons.wikimedia.org/wiki/Special:FilePath/False color image of the far field of a submerged turbulent jet.jpg?width=200 "laser-induced fluorescence]]. The jet exhibits a wide range of length scales, an important characteristic of turbulent flows.")
![Laminar]] and turbulent water flow over the hull of a submarine. As the relative velocity of the water increases turbulence occurs.](https://commons.wikimedia.org/wiki/Special:FilePath/Los Angeles attack sub 2.jpg?width=200 "Laminar]] and turbulent water flow over the hull of a submarine. As the relative velocity of the water increases turbulence occurs.")
MOTION CHARACTERIZED BY CHAOTIC CHANGES IN PRESSURE AND FLOW VELOCITY
Turbulent flow; Turbulent; Fluid turbulence; Atmospheric turbulence; Turbulent fluids; Turbulent fluid; Turbulent Flow; Turbulent force; Turbulent forces; Turbulance; Kolmogorov's theory of 1941; Turbulent diffusivity
a.
1.
Disturbed, agitated, tumultuous, wild.
2.
Tumultuous, disorderly, blustering, obstreperous, boisterous, uproarious, blatant, brawling, vociferous.
3.
Riotous, seditious, mutinous, insubordinate, refractory, insurgent, rebellious, revolutionary, factious, disorderly, wild, violent.
4.
Producing commotion.
Diffusion MRI
![DWI showing necrosis (shown as brighter) in a [[cerebral infarction]]](https://commons.wikimedia.org/wiki/Special:FilePath/Cerebral infarction after 4 hours on DWI MRI.jpg?width=200 "DWI showing necrosis (shown as brighter) in a [[cerebral infarction]]")
![DWI showing restricted diffusion in the medial dorsal thalami consistent with [[Wernicke encephalopathy]]](https://commons.wikimedia.org/wiki/Special:FilePath/MRI DWI sequence showing restricted diffusion in the mesial dorsal thalami.jpg?width=200 "DWI showing restricted diffusion in the medial dorsal thalami consistent with [[Wernicke encephalopathy]]")
![DWI showing cortical ribbon-like high signal consistent with diffusion restriction in a patient with known [[MELAS syndrome]]](https://commons.wikimedia.org/wiki/Special:FilePath/Melas dwi ax.jpg?width=200 "DWI showing cortical ribbon-like high signal consistent with diffusion restriction in a patient with known [[MELAS syndrome]]")
MEDICAL IMAGING TECHNIQUE THAT USES WATER DIFFUSION IN TISSUE AS A SOURCE OF CONTRAST
Diffusion tensor imaging; Diffusion Tensor Imaging; Diffuson Tensor Imaging; Diffusion-weighted imaging; Diffusion imaging; DTI measurement; Diffusion-weighted magnetic resonance imaging; Diffusion-weighted MRI; Diffusion tensor; Diffusion tensor magnetic resonance imaging; DT-MRI; Apparent diffusion coefficient; Bloch–Torrey equation; Tensors (image analysis); Bloch-Torrey equation; Diffusion tensor mri; DW imaging; DW MRI; DT imaging; DT MRI; DW-MRI; MRI DW; Diffusion-tensor imaging; DWI MRI; Diffusion weighted imaging; Diffusion weighted MRI; Diffusion magnetic resonance imaging
Diffusion-weighted magnetic resonance imaging (DWI or DW-MRI) is the use of specific MRI sequences as well as software that generates images from the resulting data that uses the diffusion of water molecules to generate contrast in MR images. It allows the mapping of the diffusion process of molecules, mainly water, in biological tissues, in vivo and non-invasively.
Diffusion Monte Carlo
QUANTUM MONTE CARLO METHOD THAT USES A GREEN'S FUNCTION TO SOLVE THE SCHRÖDINGER EQUATION
Diffusion quantum Monte Carlo
Diffusion Monte Carlo (DMC) or diffusion quantum Monte Carlo is a quantum Monte Carlo method that uses a Green's function to solve the Schrödinger equation. DMC is potentially numerically exact, meaning that it can find the exact ground state energy within a given error for any quantum system.
